Foam insulated roof step by step procedure

Also insulation of the roof itself, and the foam used for thermal insulation of floors, ie the floor of the attic.In this case, it is laid on a rough floor previously laid on the vapor barrier film layer, and top coated with a layer of plywood, waterproofing and decorative coating.When purchasing

foam plate should be selected of such size that the number of joints is minimized.The thickness of the foam for insulation must be at least 10 cm, the density can take any, it should be taken into account that with increasing density increases its mechanical strength and insulating properties.Sound insulation properties of the foam has almost no so-residential attic should be provided as a layer of insulation not less than 5 cm, placing it under the decorative trim.This is especially true for roofs covered with profiled sheet or metal tile - with the sound of rain drops can be heard quite clearly.

Besides the foam can also be used polystyrene plates.They have the same advantages as the foam, thus have greater strength, do not support combustion, resistant to damage by rodents.Price polystyrene slightly higher, but because of better thermal insulating properties can be taken at the plate thickness.

technology roof insulation foam

1. roof insulation foam can be made both with an applied roofing, as well as at the opening of the roof.In both cases, begin with laying thermal insulation performance of waterproofing film.The film is best to choose a special example, Izospan for roofing.It has a membrane structure and releases water vapor in one direction - inside the thermal insulation "cake" outside.The film was placed on the rafters, not pulling it.It allowed the film sagging.The roll is unwound across the rafters to the entire length of the roof, thus it is necessary to make sure that the film has turned out smooth vodoparonepronitsaemym layer.The following film strip is laid overlapping at least 10 cm, and a special tape glued joints.Between the film and crate must be an air gap, so on top of the rafters film nail bar 50 mm, and on top of it - batten boards, which are stacked and roofing.
   

   Placement waterproofing layer

2. foam slabs laid usually in the space between the rafters, taking care not to leave gaps.The plate size is cut by a clerical or other thin sharp knife on a metal ruler.Mounting foam to the rafters can be done with the help of auxiliary rails or glue for polystyrene.If the rafters are made of beams or boards, foam can be glued to the plane of the rafters glue.If the rafters have a circular cross section, fastening adhesive can be insufficient.In this case, the filing of the board adheres to the plate in two or three places, and the void between the plates and other structural elements zapenivayut.
   

   laying slabs of foam between the rafters

3. It is important to thoroughly repaired all the cracks to avoid the formation of cold bridges.Variations in temperature inside the heat-insulating "cake" led to the fact that in places subject to cooling, condensation, resulting in leakage or can be formed to begin rotting roof system.In order to avoid thermal bridges foam can be laid in two layers vrazbezhku, covering the second layer of the first joints.Between the layers are bonded to the adhesive.
   

   final stage of installation of the foam between the rafters

4. If necessary sound insulation of the attic room, put on top of the foam sound insulation mats of fibrous materials.Fibrous materials when wet lose their properties, so they need to close vapor barrier.
5. Insulation necessarily isolated from the internal space of the attic vapor barrier anti-condensate film.It is laid overlapping, carefully prokleivaya joints and is secured with the help of furniture or a staple gun to rafters or binder.
   

   Waterproofing insulation foam anti-condensate film

6. for fixing cladding should be sent - wooden blocks or profile.Their thickness should provide a ventilation gap of 3-5 mm between the insulation and cladding.As the skin is better to use natural materials, not prone to condensation.In addition, when the roof insulation foam must always be equipped with exhaust ventilation and adjustable heating system that in wet weather to avoid waterlogged walls of the attic.

When insulation foam insulation slabs technology is similar to the roof.It should be remembered that the lower layer separating the layer of insulation and draft floor, have to be a vapor barrier film with anti-condensation properties, and the top, which keeps the floor finish - waterproofing film.It will protect the insulation from waterlogging in the case of water leaks.Styrofoam plates while placed in the gaps between the ceiling beams, zapenivaya gap.By foam beams can not strengthen, it will be pressed against the floor finishing.

foam does not have a high resistance to point loads, so when used as a coating of linoleum, cork or a thin foam laminates must be closed water-resistant plywood or plasterboard.On top of the foam can also be made concrete screed, which put water underfloor heating - this will ensure uniform heating of the attic space and adjust the humidity, thereby maintaining optimum microclimate there.