Cold Flat Roof Verge Detail

Grp flat roofing systems dryseal grp component based roofing system.

Cold flat roof verge detail.

Basically there are two options to choose from when insulating a flat roof. When thermal insulation is placed below the deck the ventilation must also be on the underside. Typical mansard edge detail warm roof. Cold roofs in the case of cold roofs the residential flat roofs have the waterproof placed directly on the deck and any insulation would be placed above the ceiling.

In a cold weather such roofs are inherently prone to condensation which can cause material decay and deterioration. A cold flat roof is one where the insulation is between or between and below the roof joists. Concrete deck warm roof insulated cdeckwr pdf. In a cold roof construction the sarnafil membrane is installed directly to the structural decking usually timber with firrings to fall.

When we talk about a warm roof vs a cold roof what we re really talking about is the insulation of the flat roof. A roof is defined in bs 6229 as a flat roof if it has a pitch of 10 degrees or less. Typical mansard edge detail cold roof. This arrangement allows the deck to become cold.

The insulation is below the deck but above the plasterboard. How to lay a felt roof using cold adhesives a guide to installation a flat roof using three layers of roofing felt with cold adhesive. A flat roof must be strong durable and stable throughout its lifetime. As well as the small selection of roof detail drawings shown here many of the building notes have a related construction detail drawing with specific dimensions eg rafter sizes spans insulations types for purchase with the building specifications.

This is used for refurbishment e g. There are two types of flat roof systems warm and cold roofs which affect the positioning of the ventilation. Refurbishing an existing timber joisted flat roof which has no insulation. Installing a warm roof can be extremely straight forward and simple to do.

Verges are designed to stop rain driving over the edge and are formed after the top sheet has been applied. It must provide adequate protection against the elements keeping the buildings structure and interior dry. Flat roof ventilation allows for the circulation of air in the property particularly for warmer rooms in residential buildings. Cold roof un insulated cdeckun pdf.

Edge detail 2 welted drip to verge. The fascia board upstands the roof deck by 50mm. Cold flat roofs warm flat roofs inverted flat roofs green flat roofs solar flat roofs. Please fill in your details below to access our full list of standard details for sika sarnafils range of systems.