Mounting foam has a lot of advantages - it is both a sealant, a heat insulator, and a retainer. High-quality polyurethane foam does not change its properties for decades, but only on one condition - if you hide it from ultraviolet rays! What could be better in this case than puttying foam?
If everyone who has ever dealt with construction or repair is familiar with the consumption rates of cement, putty, gypsum and other building materials, then the consumption rate of mounting foam is the same question for backfilling even for many specialists. On two absolutely identical objects, builders can use completely different volumes of polyurethane!
There may be several reasons:
- The weather is the first reason to consider. At cold weather from a cylinder you will get a much smaller amount of foam than with a warm one. Manufacturers indicate temperature limits on the cylinder and honestly warn about such a feature, so claims can only be against nature! It is best to carry out work with mounting foam in the warm season, but if it becomes necessary to insulate the building or close up a hole in the wall in winter, use a special winter foam - it retains volume even at low temperatures. Of course, it also has a limit - minus 10 ° C.
- Manufacturer - no need to think that buying the same number of foam bottles from different manufacturers, you buy the same amount of foam. You can't tell the difference by eye, but the weight will tell everything! Take cylinders from different manufacturers in your hands, and you will feel how some are much lighter, which means that there is much less foam. So saving on cheap products will not work - you will pay for gas, and in the end it turns out that it was more profitable to buy a more expensive, but high-quality cylinder.
- Application method - the volume of foam, or rather, the amount of work performed, depends on this factor no less than on the first two. There are two ways to apply foam: through the adapter tube, which comes with the so-called household cylinders, and through, which is purchased separately for special cylinders with appropriate valves.
- The second method is also called professional, but in fact it would be much more correct to call it economical. It's simple - the gun very clearly regulates the foam supply (speed, strip thickness), thus reducing material consumption, while household cylinders give out the volume of foam, as they say, uphill. Professionals know that it takes 1.5 bottles of foam with a valve under mounting gun, but household cylinders get all four!
- Banal theft - alas, but you can not argue with human nature. Selling unused building materials is a great way for a builder to make extra money. The only way to control it is to be present when the work is done. There can be many excuses for this, for example, say that you want to install a window in the barn yourself, and you would like to learn from a professional. If you need to control the team, put in the lead person you trust. It is impossible to completely eradicate this phenomenon, but theft will decrease.
If we take into account all the factors, we can get some average flow rate. If the manufacturer indicated a volume of 60 liters on the cylinder, in fact this means that you can use up a maximum of 48 - the rest may simply remain inside the cylinder due to a lack of gas that pushes the material out.
With a mounting joint width of 20 mm to 70 mm and a depth of up to 125 mm, the foam consumption per 1 meter of the joint will vary from 13 cm 3 to 100 cm 3. It turns out that 1 meter of the seam can go from 1/5 of the balloon to 1 ¾. To cut costs, you can use joint fillers such as Styrofoam. In some cases it is even necessary!
If we talk about consumption per 1 m 2, then the costs will increase significantly - by square meter area goes from 1 balloon to 5, depending on the thickness of the layer. Depending on the goals, you can also reduce costs due to the cheapness of the material, when quality and characteristics are not particularly important to you. For example, for soundproofing, it makes no sense to spend money on high-quality foam, and the cheapest Chinese foam will cope with this. But if you decide to use foam as an adhesive, then it is better to choose the highest quality - in any case, the consumption in such cases is low.
Is it possible to putty mounting foam and how to putty it - there are answers to both of these questions! Foam can and should be protected with putty or plaster, and fortunately, these materials are good friends with each other. Plastering is necessary, first of all, where one of two conditions is required:
- Fire safety - in this case, the plaster layer should be about 8 cm! And the foam itself must be fireproof (class B1) and withstand exposure to an open source of fire from two to four hours. It is desirable that the foam be from a certified manufacturer. If these conditions are met, you can avoid sanctions from the fire inspectorate.
- Decorative look - everything is clear with this. Putty on mounting foam provides not only protection, but also closes the contents of your walls from prying eyes, giving the repair a finished look. If you want to provide additional protection against mechanical damage, use drywall.
So, let's get to work.
How to putty mounting foam - step by step diagram
Step 1: Smooth out the foam
The foam traditionally has a wave-like structure and when expanded, its excess sticks out in the most unusual positions. Puttying or plastering on such a surface will not work, so first trim the dried material (at least 7-12 hours after application). If plaster is used to protect the foam, then the seam must be further deepened by a few centimeters.
Step 2: Glue the tape
To protect a clean surface from stains, apply masking tape along the perimeter. The tape should be removed when the plaster has already been applied, smoothed and slightly dried.
Step 3: Working with the Blend
Almost any mixture will suit you for work on polyurethane foam, but the mixture has proven itself best Rotband. Follow the instructions on the package, knead and carefully, using a spatula, apply the mixture to the foam.
Step 4: Grout
When the material dries, the irregularities are rubbed with a construction mesh or sandpaper. Good polyurethane foam withstands pressure well, so you can not be afraid to apply force, as when grouting conventional plaster.
It is far from always advisable to spend money on the purchase of a plaster mixture and wages for workers. But you should still think about it - some methods are inexpensive, but no less effective than plaster. In addition, if the foam has a dense structure, it will have a rather nice appearance on a clean cut, which means that the “decorative” issue will not be so acute.
For cutting, it is best to use a foam hacksaw - it has special teeth that do not tear the material.
When this is inconvenient, use with an ordinary knife with a sharp blade. After trimming the foam, try to wipe problem areas with protrusions with coarse-grained sanding paper. Then you can use regular paint, preferably white or light colors. Modern compositions have special pigments that provide additional protection from ultraviolet radiation, but even a completely ordinary floor paint in several layers will perfectly protect the foam from direct sunlight.
Roofing felt, metal sheets, boards - all this can be used to protect polyurethane foam. If decorative look you don’t care at all, and the foam is under a constant shadow, it can be left uncovered - air and moisture have practically no effect on it.
Polyurethane foam is a polyurethane foam sealant that is used in construction. The material quickly hardens and protects the base from aggressive influences. environment. However, the foam itself is vulnerable to external factors. Putty is used to protect the material. The main thing is to know how to choose and apply the composition.
The purpose of mounting foam is to fill spaces and holes. The service life of the material after application is 5 years. After this period, the foam is dismantled and used new composition. If this is not done, then the material will collapse, and in the voids there will be a favorable environment for the spread of mold and fungus. In addition, the mounting foam is destroyed by ultraviolet radiation. To prevent this from happening, the material must be protected. You can do this in several ways:
Application of sealing tape. The material will protect the foam from exposure to UV rays and degradation, but the product has a short operating period and is not intended for outdoor use.
Application of primer and similar compounds. Means provide waterproofing of the material, but do not protect against sunlight.
Puttying. The composition will protect the foam from moisture, ultraviolet radiation and other negative environmental influences. Professionals also highlight other advantages of putty - affordable price and ease of use.
In addition, it is used acrylic paint, sealant, putty and other compounds, but such products will not provide reliable protection for the material if the excess has to be trimmed.
How to protect mounting foam?
How to putty mounting foam - such a question arises among amateurs who first encountered such work. For this material, any putty is suitable. Professionals recommend choosing a composition based on where the material will be used - indoors or out. For this, a remedy for internal and external works, respectively.
Work algorithm
If the repair is performed by a non-professional master with his own hands, he is advised to carefully familiarize himself with the algorithm for applying putty.
Choice of funds
As already mentioned, if the work is carried out indoors, then the composition is used to internal works, and if outside, then for external. In addition, the thickness of the agent layer is taken into account. To mask small defects and protect the material, a thin layer of the composition is applied, 2 mm thick. For this, only putty is used. The variety doesn't matter. To fill voids, the depth of which is up to 15 cm, plaster is used before puttying.
You will also need a primer. The composition improves the adhesion of the material and topcoat. Professionals advise using an acrylic primer. This composition is suitable for all types of surface and has good characteristics.
Puttying tools
For finishing works You will need a set of tools that includes:
stationery knife;
a set of spatulas for applying the product;
work gloves;
masking tape;
capacity and construction mixer(drill with mixer attachment) if dry mix is used.
Preparation of the building base
Surface preparation algorithm:
wait until the foam expands and hardens (the material dries in 12 hours, but to clarify the time it is recommended to carefully study the product packaging);
cut the protruding edges with a clerical knife so that the surface becomes even (as in the photo below);
fix the masking tape on the surface that does not need to be finished;
fill voids with plaster;
clean the base from dust and other contaminants;
apply primer.
Puttying
Putty on mounting foam is applied as follows:
Prepare the composition if a dry mix is \u200b\u200bused for puttying. Dilute the product with water. The amount of liquid for mixing the solution is indicated on the package.
Apply to foam. Thickness - 3-5 mm.
When the composition hardens, clean the surface. After that, treat the base with a primer.
Take a break to dry the primer. The hardening time is indicated on the packaging of the composition.
Apply finishing putty. Layer thickness - 1 mm. When the material hardens, clean it with fine sandpaper. Suitable material P 120 or P 150. Then treat the surface with a primer. After the composition has dried, finish and remove the masking tape from the untreated surface.
Puttying window slopes
If you want to putty the slopes of the window, then the joints and putty will need additional protection that the paintable sealant will provide. Instructions for using this product:
treat the surface with putty;
dismantle the material from the seam 3-4 mm from the edge;
fill the resulting void with sealant.
Puttying the car arch
Mounting foam is also used for car repairs. The material fills the voids that are formed as a result of stripping rust. Most often, mounting foam is used when repairing an arch. The material also needs the protection that putty can provide. In addition, the composition will even out the surface. To putty a car arch, you can use any tool. As a starting composition, professionals recommend using fiberglass material. For the topcoat, a universal agent is used or the surface can be puttied with a product with aluminum filler. After the composition has hardened, the base is cleaned and primed. Then the paint is applied and the work is completed.
Calculation of putty consumption for mounting foam
Calculation of putty consumption per 1 sq. m of mounting foam is indicated on the package. Usually it is 0.6-1 kg per 1 m2 when applying a layer 1 mm thick. Therefore, the thicker the layer, the more putty will be required. It is necessary to perform an accurate calculation of the funds, because ready composition not subject to storage.
How much does putty for polyurethane foam cost?
If we talk about how much putty for mounting foam costs, then it all depends on the product. For example, the price of a latex composition is 200 rubles per 1 kg. Dry mix is much cheaper. The price for 25 kg of funds is about 250 rubles. The cost of putty also depends on the manufacturer. The more popular the brand, the higher the price of the product.
The video in this article demonstrates how to properly putty foam.
Puttying the mounting foam is an obligatory stage of repair before finishing. Neglect of such work will lead to the destruction of the material and the appearance of an aggressive bacterial environment.
HideMounting foam is used everywhere, especially when installing windows. It's comfortable and practical material however, it requires protection from sunlight and moisture. That is why the question often arises - how to close the mounting foam outside the window? Exists big choice materials to try to understand.
Why does the foam need to be closed?
What if you need to finish the slopes from the inside?
For interior work, the same technologies can be used, however, in addition to plastic and plaster, you can also use it: it will hide the foam from the eyes, it can be painted or wallpapered. The only disadvantage of the material is moisture fear, so it cannot be used from the street side. Drywall is easily attached with self-tapping screws or dowels, helps to create a perfectly flat surface, and is inexpensive. After the panels are installed, they must be coated with a primer for better adhesion to the future fine finish.
Installing plasterboard slopes inside the building
Drywall lends itself well to any processing, but it is first desirable to putty all the cracks and caps of self-tapping screws.
Please note that for the installation of panels you will need wooden profile. If you have smooth walls, you can not use the crate. It is enough to glue the panels on a special glue. This greatly simplifies the installation task.
There are a lot of options for how to fix mounting foam on windows from the street. We have illustrated the most affordable and cheapest of them, using these tips, anyone who does not have builder skills can close the foam on the windows.
In all construction and installation work often you have to resort to sealants, the most popular of which is polyurethane foam. This type of building material has entered our lives so tightly that we consider it an indispensable tool for sealing small seams. However, it must be hidden under finishing material, and for this you need to know how to seal the mounting foam.
Very often, foam is also used to seal cracks and doors. Such popularity is easily explained by its operational characteristics and the fact that she always eliminates the problem as much as possible. Today, this material is a polyurethane foam sealant, which in most cases is produced in an aerosol can. You can now find mounting foam on the shelves of all hardware stores in a huge assortment. Apply construction foams in two cases:
- for thermal insulation of premises;
- seam sealing.
Polyurethane foam is in demand due to the fact that it is great for materials such as wood, metal, glass, concrete. Unfortunately, due to its unusual appearance, it does not always fit into the external interior of a room or premises. It is in order to preserve its special characteristics and at the same time make it invisible that it is necessary to seal the foam with another material. Most people have no idea how to fix it, so they immediately call the masters if such work is required. However, everything is quite simple, and even without special education, skills and special knowledge in the field of construction.
If you have used mounting foam to work with the exterior of the premises, be sure to remember that for all its durability, it requires constant protection from ultraviolet radiation and getting wet. If you do not protect the mounting foam from the effects of adverse factors, then its service life will be significantly reduced to 5 years. Sometimes when, in order to avoid such situations, the cooled foam is lubricated with a special primer solution.
Necessary materials for termination
Many people ask: how to seal the mounting foam? There are several options: ordinary sealant, putty or pre-sealed self-adhesive tape.
To cover the mounting foam, you must approach carefully, because it must be water-proof and vapor-tight. According to experienced and qualified craftsmen, putty for outdoor work is an excellent choice. The usual putty is sold in the form of a powder mixture, which must be diluted with a certain amount of water in order to obtain a special solution. You can find putty in almost every hardware store. Pay attention to the frost-resistant version of outdoor putties: their range is quite large, so you can choose the one that best suits your financial capabilities.
To securely seal the mounting foam, you will need to stock up in advance with materials such as:
- putty for outdoor work;
- small size knife;
- solution container;
- water;
- rubber gloves;
- Master OK.
Closing technology
First of all, you will need to prepare the surface of the mounting foam. cut off upper layer foam from the surface. Next, put on gloves and start preparing the putty solution for outdoor work. You don't need a lot of putty solution, so don't overdo it. It is better to knead less and then finish more than to translate expensive building materials.
You can find it directly on a pack of putty. Using a trowel, apply the wet putty in such a way that you have the opportunity to quickly level it before it starts to harden. In some cases, cracks may appear. This is due to the fact that the layer is too thin, for this reason it is necessary to apply a layer several millimeters thick. It is also not recommended to apply thick layers of putty, as it will peel off during the drying process. Correct application layer of this building material will allow you to keep a pleasant appearance your work and reliably seal the mounting foam.
After the applied putty has dried, it is processed with sandpaper or construction mesh. They do this to remove roughness and give the seams that were sealed an aesthetic and neat look.
Another way to protect the mounting foam from exposure to moisture and ultraviolet from sunlight is a sealing tape. This tape is in most cases used to fill holes and irregularities in various openings that occur as a result of the installation of new structures.
Every owner wants his house to look perfect. With the help of the method described above, you already know how to cover up the mounting foam, and you can easily hide the traces of sealing gaps, as well as protect the surfaces trimmed with foam from adverse weather conditions and other harmful factors. The main thing in these is not to rush, because the accuracy and the final result of the work done depend on your movements. Be patient and you will definitely succeed.
How to cover up mounting foam - common and important question. After all, mounting foam, if necessary, to install PVC windows has gained considerable popularity due to important operational benefits. In its composition, the mounting foam is a polyurethane foam sealant, among the main components of the material, isocyanate and polyol should be distinguished. Also, the production composition of the mounting foam is supplemented with various auxiliary components - a stabilizer, blowing agent, catalyst, etc.
The main characteristics of polyurethane foam are viscosity, output volume, adhesion, primary, secondary expansion. This construction material depending on the composition, it can be presented in the form of one-component or two-component mixtures. It is possible to separate the mounting foam and according to its intended purpose - household, professional, winter, summer, all-weather.
We cover the mounting seams - the foam requires proper protection
But even for the demanded multifunctional material, appropriate protection is also required. After all, mounting foam during operation is faced with detrimental effects in the form of moisture and sunlight. This is also reported by manufacturers on cans of polyurethane foam. But a quite reasonable question arises - how to close up the mounting foam.
To avoid negative impacts and significantly increase the service life of the mounting foam, simple and sufficient effective options- treatment of foam with sealant, paint, putty or with the help of special materials. Without protection, cracks and staining of the mounting foam occur due to the harmful effects of sunlight and moisture.
Destruction will not occur immediately, but the resource of mounting foam without protection will be insignificant - only about four years. After this time there is a loss thermal insulation properties building seams. Exposure to moisture, temperature fluctuations and ultraviolet light lead to a loss of thermal conductivity of the foam - it loses its hygroscopic properties, and gradual destruction occurs.
How to cover mounting foam - how to achieve a durable result
Therefore, for mounting foam prerequisite becomes the appropriate protection - to maintain properties during operation without the need for frequent repairs. Before filling the foam with putty or sealant, you can use PSUL (pre-compressed sealing tape), which is specially designed for the respective tasks.
Other means can be used to protect the mounting foam:
Finishing plaster or putty resistant to temperatures below zero;
Polyurethane sealant;
A solution of sand, cement, white grout;
liquid plastic;
Acrylic paint;
Window putty and other methods.
How to cover up mounting foam - competent help from Harvest Industriales
To ensure the quality and durability of the result, installation plastic windows and related work is recommended to be entrusted to competent specialists. Experienced specialists of Harvest Industriales approach each project individually, taking accurate measurements, carefully considering the features of the work and the object, choosing the preferred method of protection for reliable protection mounting foam.