Domestic roof construction


Modern wooden roofs are usually made by attaching common rafters or truss connecting plates with prefabricated wood trusses. Wooden framed, and historic buildings can be frame with principal rafters and wooden roof trusses. Roofs are also designate as hot or cold roofs depending on how they are designed and construct about thermal insulation and free ventilation. Steep or roof pitch An opal roof is mainly determine by the roof covering material and aesthetic design. Flat roof water flow is about ten degrees. Flat roofs in houses are mainly find in dry areas.

Construction of a truss roof

Pre-manufactured roof trusses come in a variety of styrofoam. The manufacturer designs these for each specific building. Wooden trusses are make in different styles using wood or metal joints. Heavy wood rafters are usually called principal rafters, from 240 cm (8 ft) to 370 cm (12 ft). Principal rafters can be mix with common rafters or carrying ordinary purlins.

Understanding design

Roof framing must withstand structural loads, including dead loads, its weight and roof covering weight, and environmental loads known as extra loadings, such as snow and wind flat roofs. Our professional Dublin roofing services are always available for you. The load and span (distance between supports) define the size and spacing of rafters and trusses.

Roof covering

Roofing components are primarily design for watering. The cladding is also a significant component of the architecture, so roofing materials come in various colors and textures. Roofs in North American homes are primarily cover with Jamal pendants, but some have a different type of roof pendant or metal roof. Tiles and claws are more common in Europe than in North America. Reflecting light helps to reduce the cost of air conditioning in hot climates by designing some roofing materials.

Ventilation and insulation

The fight for density in the roof space requires ventilation of the roof space, which leads to inward condensation in the roof fabric; This can lead to severe structural damage, wet or dry rot, as well as damage to the insulation of the roof specs.

Density in the roof space is much more problematic today: due to the stiff building envelopes with high-performance windows and doors and the lack of chimneys leading to less good ventilation. So many roofers in Dublin have, but we have the best team members. They are capable of protecting your roof.

 We have 15 years of experience in the roofing sector.  This rigid envelope refers to the fact that as the air temperature in buildings increases, the building becomes warmer, and more air can carry water vapor. As the occupied part of the building warms up, the roof space becomes cooler as high-performance insulation and roofing membranes lead to a more relaxed roof space.

Condensation and heat remove ice dams and aid in long-lasting dumping horns. U.S. building codes specify ventilation rates as low as 1 sqft (0.093 m.) 2 per 150 sq. Ft. Open (14 m2 ) ( 1: 150) in some cases with a 1: 300 ratio. [7] Warmer air increases, so ceiling insulation is design for higher R-values ​​, and insulation is often install between ceiling joists or rafters.

An adequately heat and ventilate roof is call a cold roof. A warm roof is a roof that is not ventilat, where the insulation is adjust to the roof pitch.  A heated roof is designed to withstan no ventilation and has sufficient air-permeable insulation in contact with the shingles to prevent condensation.


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