Sealant for roof - creates a reliable roof

sealant for roofing - material for all occasions

Roofing sealant - a special sticky substance is intended for roofing and roof repair of a variety of materials.The basis for this substance are silicone and polysulfide liquid rubbers.Sealants retain their properties over a wide range of temperatures (from -55 ° C to + 80 ° C).

By type of substrate used, all sealants are divided into:

• Acrylic - Sealants of this type are used to fill cracks in various materials, smoothing joints in floors, walls and windows.In connection with its rigidities, are rarely used for the exterior;
• polyurethane - it preparations, which are ideal for outdoor repairs.Used for sealing and bonding of metal, concrete, wood, stone and other polyurethane sealant for roofing is an ideal solution to the problem of small repairs.;
• silicone - sealing of this type are usually used in the installation of doorways and window frames, suitable for work with glass, ceramics, wood, etc. This material has excellent resistance to UV radiation and temperature extremes..Due to the versatility of use are: heat-resistant silicone, silicone sealant for roofing, spetssostav for glass and other
• bitumen - these sealants are resistant to all kinds of precipitation, solvents, petrol and oil..Used for sealing joints of concrete and concrete structures.It is toxic, so its application is limited to exterior.Based on modified bitumen produced specially formulated for metal roofing.

Roof Sealant - advantages and disadvantages

To finally determine the choice of roofing sealant, it is necessary to consider the advantages and disadvantages of different types of material.

Silicone sealants are highly adhesion to all building surfaces, show a high resistance to UV radiation, as well as mold, mildew and weathering.They are represented by a large range of colors.

It would not seem that these sealants are ideal for all occasions, but they have drawbacks: they can not be applied to damp surfaces, it is impossible to paint the conventional dyes, inadequate adhesion to some plastics (polycarbonate, polypropylene, PTFE, polyethylene and OE).

Acrylic sealants have amazing adhesion to porous surfaces, contains no solvents, no odor.These sealants are presented in the widest range of colors.After curing, can be painted and varnished.There are water-resistant and nevlagostoykimi.Among the shortcomings: Do not apply to wet surfaces, temperatures and demanding application.

polyurethane sealant considered the best option for roofing repairs.It has excellent adhesion, corrosion resistance, and resistance to salt, UV radiation, acids and alkalis.Not flows on the surface, does not change the volume, easily colored, quickly grasped.Among the shortcomings can be noted the presence in its composition of harmful, corrosive substances.

Bituminous Sealants used for sealing, filling and sealing cracks in drainage systems, roofs, chimneys, etc.Among the advantages of these sealants can distinguish good adhesion, resistance to low temperatures, the possibility of use on wet surfaces, low cost.The disadvantages are the instability to heat and only the black color material.

Roof Sealant - principles

work for roofing sealant selected, it is now necessary to carry out preparatory work prior to implementation of the sealing of the roof.The composition should be applied on a dry surface, pre-cleaned from dust, dirt, grease and debris directly from the tube or using a special fastening tool.The seams must be filled without air gaps.

When using acrylic sealant film is formed in 20 minutes after application.Time adhesion test - 1h.material Full cure occurs in 21 days.

Polyurethane Sealants form a film about 1.5 hours and full curing takes about 14 days.If damaged joint may re-applying the substance to the same place.To carry out the work necessary to wear gloves and a respirator.

Silicone Sealants grasped for 30 minutes, with full cure depends on the thickness of the suture.Working with this material is available in a wide temperature range (from -20 ° C to +50 ° C).

work with bituminous sealants performed in thin layers and at zero temperature.That's all the features of this type of building materials.