Drain Fittings

Topic

Radon

Subtopic

Radon Precautionary Measures

Desired Outcome

Reduce potential for radon to enter the living space through foundation drain penetrations.

Legend - Housing Type

SF Single Family Site-Built Housing

MH Manufactured Housing

MF Multifamily Housing

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SF

MF

Specification	Objective
Specification Seal around the perimeter of all drain fittings that penetrate a concrete slab using urethane caulk or equivalent sealing material Sealant must not affect the ability of the drain to function and be compatible with the surfaces it contacts	Objective Durable, airtight seals around functional drain fittings

SF

MF

Specification	Objective
Specification Install a one way valve in all untrapped, below grade drain fittings that does not interfere with appropriate drain function	Objective Prevent air infiltration from below grade drains without affecting drain function

Specifications