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Thru-Wall

TAMKO TW Thru-Wall Flashing

Flashings remain a critical component of any cavity wall system.

TAMKO’s Thru-Wall flashing protects specific areas within exterior wall assemblies and creates a barrier for water to follow to the face of the exterior finish.

TAMKO® Thru-Wall helps avoid costly degradation of wall components.

Our Products

TW Thru-Wall Flashing Membrane

TW Thru-Wall is a self-adhering sheet membrane consisting of a self-adhering rubberized asphalt and an 8-mil polymer film as the top surface. Features treated release film for installation and han-dling. TW Thru-Wall is used with concrete, masonry, gypsum, felt-faced and foil-faced polyisocyanurate foam insulation or wood wall construction.
Product Details

WATERPROOFING PRODUCTS BEGIN TO AGE AS SOON AS THEY ARE EXPOSED TO NATURE, AND BUILDINGS EXPERIENCE AGING FACTORS DIFFERENTLY. BECAUSE IT IS DIFFICULT TO PREDICT HOW LONG WATERPROOFING PRODUCTS WILL LAST, TAMKO OFFERS A LIMITED WARRANTY THAT INCLUDES A BINDING ARBITRATION CLAUSE AND OTHER TERMS AND CONDITIONS WHICH ARE INCORPORATED HEREIN BY REFERENCE. YOU MAY OBTAIN A COPY OF THE LIMITED WARRANTY AT TAMKO.COM OR BY CALLING 1-800-641-4691.

TWP-1 Adhesive Primer

A high-quality rubberized primer formulated for professional waterproofing contractors. Used to promote a powerful bond to asphalt, concrete, masonry and metal surfaces, and features a red tint to make it easier to identify areas that have been primed. Ideal for use in preparing surfaces to receive TAMKO® waterproofing membrane.
Product Details
WATERPROOFING PRODUCTS BEGIN TO AGE AS SOON AS THEY ARE EXPOSED TO NATURE, AND BUILDINGS EXPERIENCE AGING FACTORS DIFFERENTLY. BECAUSE IT IS DIFFICULT TO PREDICT HOW LONG WATERPROOFING PRODUCTS WILL LAST, TAMKO OFFERS A LIMITED WARRANTY THAT INCLUDES A BINDING ARBITRATION CLAUSE AND OTHER TERMS AND CONDITIONS WHICH ARE INCORPORATED HEREIN BY REFERENCE. YOU MAY OBTAIN A COPY OF THE LIMITED WARRANTY AT TAMKO.COM OR BY CALLING 1-800-641-4691.

TWM-1 Mastic

Designed for multiple uses, including finishing the edge of seams, overlaps, patches and terminations of properly sealed TAMKO® waterproofing membranes. TWM-1 Mastic is a high-quality trowel-grade rubberized bitumen mastic that dries to a strong but pliable seal, allowing for minor expansion and contraction. Applied with a trowel or caulking gun.
Product Details
WATERPROOFING PRODUCTS BEGIN TO AGE AS SOON AS THEY ARE EXPOSED TO NATURE, AND BUILDINGS EXPERIENCE AGING FACTORS DIFFERENTLY. BECAUSE IT IS DIFFICULT TO PREDICT HOW LONG WATERPROOFING PRODUCTS WILL LAST, TAMKO OFFERS A LIMITED WARRANTY THAT INCLUDES A BINDING ARBITRATION CLAUSE AND OTHER TERMS AND CONDITIONS WHICH ARE INCORPORATED HEREIN BY REFERENCE. YOU MAY OBTAIN A COPY OF THE LIMITED WARRANTY AT TAMKO.COM OR BY CALLING 1-800-641-4691.
 

Frequently Asked Questions

What is thru-wall waterproofing?

Thru-wall waterproofing is a membrane system installed within masonry or cavity walls to direct moisture to the exterior and protect internal wall components from water intrusion.

Where should thru-wall membranes be installed?

They're typically applied above flashings, shelf angles, and other structural breaks in cavity wall systems — anywhere moisture can collect or penetrate the wall assembly.

Can TAMKO® Thru Wall Waterproofing be used with other TAMKO® products?

Yes. It integrates easily with TAMKO® TW Flashing, Below Grade Waterproofing membranes, and other envelope protection products for a continuous barrier.

What substrates are compatible with this system?

Thru Wall membranes adhere to properly prepared concrete, masonry, plywood, and metal surfaces.

Are TAMKO® waterproofing products covered by a warranty?

Yes. TAMKO® waterproofing products may be backed by TAMKO's Limited Warranty. See tamko.com/limitedwarranties for complete details.