Flat Roof Details Pdf

The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls.

Flat roof details pdf.

Flat roofs are hard to replace. Airtightness page 7 very good levels of airtightness are required for all flat roof constructions. But now flat roofs often are constructed with fewer layers because of improved waterproofing technology. Having a manual for warm flat roof construction with details and a summary of rules to follow helps.

Slope to flat roof spec sheet download. Some observers suggest it s harder to replace a flat roof than a traditional pitched shingle roof because of the labor required to remove its layers especially on older flat roofs. Warm and cold roofs householder s guide to flat roofing in a flat roof the waterproofing is always supported by a structural roof deck. This is usually a timber boarding of some type which in turn is supported on joists.

A blower door test is strongly recommended. Valley detail clip valley detail one piece vented ridge detail. Roof of the building seems to float suspended from four welded solid. Flat roof construction for residential.

The overhang of the roof at the wall is called the eaves. This could mean flat roofs may not raise the same red flags they used to. That will help you remember certain factors and details to build the best possible flat roof. Cad details document name pdf dwg download all cad construction details 37 1 mb 3 4 mb mc01 identification of roof areas 694 kb 167 kb mc01a single layer underlayment 678 kb 302 kb mc01b double layer underlayment 711 kb 322 kb mc02 vent pipe flashing 626 kb 349 kb mc03 valley.

Factors that affect a flat roof construction. So in reality flat roofs are never totally flat but rather have a slight fall the minimum of a flat roof is 1 50. Cad pdf drawings testing bim. 100 dan road canton ma 02021 phone 1 800 451 2504 sales 1 800 576 2358.

It is more accurate to describe such a roof as semi flat. Location page 5 factors such as the amount of sunshine temperature surrounding buildings or wind affect a flat roof and need to be considered. Pac ss ridge vent slope to high wall spec sheet download. A roof must have some slope in order to shed rainwater.

A roof is considered to be flat when it is of a slope of 1 5 o to the horizontal.