Insulating Windows With Spray Foam

Windows play an important role in heat regulation in all climates. If not insulated properly the open gaps can result in heat and energy loss. Thus, insulating windows with spray foam has turned out as a quick fix option for homeowners.

The spray foam which comes in a can is used to fill the damaged interior insulation. This is a low-cost hack that gets the job done and makes your home more energy-efficient.

How To Use Spray Foam Cans :

1) The very first step towards insulating your windows with spray foam is to invest in one. Here you can see our recommendation

2) First, inspect and monitor your windows where the foam needs to be used. This is done to make sure there is no dust or other materials in the gap that might affect proper functioning.

3) Shake the can well before use. Next, remove the cap, fit the nozzle and do a dry run in the crevices where the foam needs to be filled. This way we’ll make sure that the targeted area is clean and smooth.

4) Now do the actual thing, spray carefully. Don’t overfill as the liquid will expands with time and become more solid.

5) Don’t touch or get in contact with the spray material for at least three days.

Please Note

It is better to use gloves when using this can. Why? Once it gets into your hands it not only gets messy but it’s tough to take it out. Don’t have one try this, you can use it for other purposes as well. Don’t get your hands dirty at any cost.

Polyurethane foam a very versatile material is used in these cans. This foam can easily fill and seal gaps, mount doors and windows and is also a thermal and acoustic insulator. Due to its easy application, it has become one of the most indispensable materials in construction.

But its use is not only restricted to this area. There are more and more craftsmen who choose polyurethane foam as an essential tool for performing their handicrafts.

Discover all the possibilities offered by this product.

This material is the product of polyol and isocyanate. These are liquid at room temperature and produce an exothermic chemical reaction that forms bonds between both components creating a solid, uniform and very resistant structure, with a volume greater than that occupied by the product in its liquid state, which is known as rigid polyurethane foam.

Uses Of Expansive Foam :

• Insulation: due to its properties, the foam helps improve acoustic and thermal conditions.

• Assembly: with polyurethane foam, you can mount, among many other things such as doors and windows very easily.

• Seal gaps: allow filling irregular joints or large cracks with ease in the window.

Types Of Polyurethane Foam :


There are universal forms that serve both to insulate and to carry out the rapid filling of gaps, crevices, holes, and cracks in all types of materials. Besides, they are sandable and paintable (when the surface is dry) and there are with or without a gun for application.

One of its use is to thermally and acoustically isolate the spaces by mounting and fixing doors and windows as well as filling gaps and cracks.

The better the insulating and resistance quality the lower the bubble generated in the foam.

Specifics :

1. Indoor/Outdoor: you can apply all spray foams in thermal conditions between -5ºC and + 20ºC. However, you can also find special foams to be used in environments with extreme temperatures (-10ºC and 35ºC).

2. Joints: they are mostly used to fill joints together giving them flexibility. They do not crack after solidifying.

3. Fire retardant: with a trigger to proceed to a controlled dosage, this foam has flame retardant properties. Specific for insulation, fixing and filling works.

Main Characteristics Of Polyurethane Foam :

• Thermal insulation: It has a very low coefficient of thermal conductivity. This helps to achieve great savings in energy consumption.

• Water-resistant insulation: Its inclusion helps to protect facades, floors, and ceilings from dampness. Besides guaranteeing high impermeability.

• Acoustic insulation: Create a barrier against noise coming from the outside.

• Chemically stable: The projected polyurethane foam can be painted, varnished, glued, coated, or can used as a coating for rooms with aggressive atmospheres.

• Excellent Adhesion: Its adhesion occurs on any consistent, clean and dry construction material. Once applied, it doesn’t crack easily due to temperature changes or dilation.

Advantages Of Spray Foam Insulation-

• Construction expenses can be reduced as insulation with this material requires very little space. Thereby reducing the demand for labor and placement time.

• Spray system allows direct application without the need for complicated preparations. It also facilitates its application even in finished buildings.

• The polyurethane foam will not assign or deform over time. This makes it an excellent long – term investment. But, this does not mean that some precautions should not be taken to ensure its durability.

• Its application is quite simple since (shake the can of the polyurethane foam and inject the material in the place to be filled). As previously stated, the initial liquid expands on its own and taking volume as foam that then solidifies. It is also applied with a gun.

All these features have led to the use of spray polyurethane foam to repair almost any damage that can be detected in a building. From filling gaps in windows, doors, walls and other structures to plugging leaks in pipes, these cans can work wonders.