Felt Roof Upstand Details

On exposed membrane roofs the upstand height is measured directly from the membrane surface.

Felt roof upstand details.

This easy how to video shows flat roofers beginners and pros how to seal external corners. Iko sig design technology upstands acknowledge the fact that rainwater can build up on a roof during heavy storm events. When constructing flat roof waterproofing systems good practice dictates that the minimum required height for upstands is 150mm. Practical considerations however are likely toread more.

As long as the 150mm minimum upstand height is achieved then theoretically the upstand can extend to any height to suit the roof design and roof edge detail. Reputable flat roofing manufacturers should have appropriate detail drawings for most penetration requirements. There is no limit on the height to which the single ply membrane can be bonded up a flat roof upstand. Do not cut the felt straight onto the roof or already laid felt always using a cutting board.

Laying a felt roof is hard manual work which once started needs to be finished you cannot leave it. This will ensure that british standards and codes of practice are properly maintained including minimum 150mm upstands and mechanical restraints at waterproofing termination points. Have adequate provision for the additional loads where a flat roof is to act as a roof terrace roof garden or car parking area have adequate provision for movement in larger roofs particularly where the span of the roof deck changes e g. If you just took your waterproofing up to the edge of the roof and didn t have an upstand the local construction would get saturated.

Technical resources for your flat roof project. Rainwater can build up on a roof during heavy storm events and it may be stating the obvious but unless checked this water could spill into building and saturate construction elements electrical installations as well as internal finishes and effects. No new flat roof installation is complete without the detail work. For conventional flat roofs this height is taken from the surface of the waterproofing but for landscaped roofs it should be taken from the surface of the finished landscaping.

150mm upstand to brickwork with chased joint single ply detail. At bauder our service is free to you and covers all elements for a successful project delivery from initial concept or site survey through to specification package with bespoke drawings and calculations on site monitoring and final sign off and handover.