Outstanding gap filler!
The Backer Rod is an excellent product to fill gap between replacement window and frame.

Construction Foam — Oodles of Noodles
★★★★★ 4.8 from 35 ratingsPrice and stock follow the live listing; the figure at the checkout is the one that counts.
Backing foam for joints, cracks and pipe runs, sold as a 35 ft length. The tube is about 8 inch in diameter, with a solid core, moulded from polyethylene foam.
Driveway joints, sill plates and plumbing that sweats through the summer
Size the rod about a quarter wider than the gap, roll it in with a blunt tool so the skin stays intact, then tool the sealant over the top. If you need more than one pack, the listing will show the current multi-pack savings
| Run length | 35 ft |
|---|---|
| Diameter | approx. 8 inch |
| Core | Solid foam |
| Material | Polyethylene Foam |
| Weight | 8 ounces |
| Lane | Construction Foam |
| Listings in this family | 1 |
Taken word for word from the listing.
The Backer Rod is an excellent product to fill gap between replacement window and frame.
It was very easy to fit into gaps and it expanded back to fill in spaces.
3/8 back rod perfect price got it the next day. Great quality perfect fit came in a bag so it wasn’t spaghetti everywhere.
Open the listing to see the current price, the colour in stock and the delivery date for your address.