Cold Flat Roof Verge Detail

When we talk about a warm roof vs a cold roof what we re really talking about is the insulation of the flat roof.

Cold flat roof verge detail. A cold flat roof is one where the insulation is between or between and below the roof joists. Typical mansard edge detail warm roof. Verges are designed to stop rain driving over the edge and are formed after the top sheet has been applied. In a cold roof construction the sarnafil membrane is installed directly to the structural decking usually timber with firrings to fall.

Installing a warm roof can be extremely straight forward and simple to do. Refurbishing an existing timber joisted flat roof which has no insulation. For this content to be displayed you need to accept all cookies in the cookie settings and confirm your selection or by clicking the. Typical mansard edge detail cold roof.

This arrangement allows the deck to become cold. In a cold weather such roofs are inherently prone to condensation which can cause material decay and deterioration. Cold flat roofs warm flat roofs inverted flat roofs green flat roofs solar flat roofs. There are two types of flat roof systems warm and cold roofs which affect the positioning of the ventilation.

A flat roof must be strong durable and stable throughout its lifetime. Concrete deck warm roof insulated cdeckwr pdf. This is used for refurbishment e g. It must provide adequate protection against the elements keeping the buildings structure and interior dry.

Edge detail 2 welted drip to verge. Grp flat roofing systems dryseal grp component based roofing system. 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. 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.

Cold roof un insulated cdeckun pdf. The insulation is below the deck but above the plasterboard. The fascia board upstands the roof deck by 50mm. Additional construction details drawings.

Please fill in your details below to access our full list of standard details for sika sarnafils range of systems. 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. A roof is defined in bs 6229 as a flat roof if it has a pitch of 10 degrees or less.