When roof drains are located a great distance away from a sloped roof edge more than 48 it can be more cost effective to use a tapered backwash.
Roof drain sump insulation.
Tapered insulation panels should be installed around the drain to ensure positive flow of water towards the drain.
Hunter panels tapered department consists of designers estimators customer service and field personnel.
Hunter pre cut tapered products sumps hips valleys designed to save you time and money.
The dimensionally stable gemini dst provides a positive 4 way slope to the roof drain.
Placed around the drain the sump created is 8 feet by 8 feet.
In metal stud walls the requirement for continuous insulation in addition to the insulation within the stud space is new.
We assist you in design and installation of the most efficient tapered polyiso solutions to meet your specifications and budgetary needs.
The 1 2 inch per foot slope is used as it doubles the slope of the structurally sloped roof deck which in this case has a slope of 1 4 inch per foot.
The roof drain should be recessed below the roof surface.
At roof drains the 4 of insulation can taper down to 3 within the area of the drain sump.
Atlas tapered acfoam products include accessories like the gemini drain set.
This can be accomplished by setting the head of the roof drain below the insulation level and by providing a sump at the drain.
Gemini drain set dst is produced with a closed cell polyisocyanurate polyiso foam core integrally laminated to non asphaltic glass fiber reinforced organic felt or inorganic coated glass facers.
Roof drain pans are a fast easy and cost effective solution check out our blog for more good info on this subject.
The gemini drain set is the only 4 x 4 drain sump that requires no.
Basically 4 of insulation is required with the only exception at roof drains.
Our roof insulation products have zero ozone depletion potential odp and virtually no global warming potential gwp.
Now to have a nicely tapered roof only to lead to a 3 by 3 flat sump is going to make a white.
As a general rule if the insulation is two inches thick or less a 4 foot by 4 foot sump is sufficient.
Tapered backwashes can also help reduce the insulation height at the roof edge.
One mistake that is commonly made with roof sumps is that they are made with extended flat areas.
The next layer of insulation is 2 5 inches and abuts the backside of the tapered insulation.
If the insulation reaches three inches or thicker an 8 foot by 8 foot.
Localized drainage at drains.
Roof drain sump pans prevent eliminate standing rainwater on your flat roof.
A typical interior roof drain assembly occupies about a 4 foot by 4 foot square area with a inch per foot tapered slope.
Unless the roof drains are lower than the surrounding roof they will not drain resulting in huge pools of water.