Calculadora de Manta de Vedação

Como Usar Esta Calculadora

1. 1Measure your total foundation perimeter in linear feet.
2. 2Enter the roll coverage (most rolls are 50 ft).
3. 3Click Calculate to see how many rolls you need.

Sobre Este Material

Sill seal is a closed-cell polyethylene foam gasket installed between the concrete foundation wall and the pressure-treated sill plate. Its primary purpose is to block air infiltration and prevent moisture from wicking up through the concrete into the wood framing. Standard sill seal comes in 5.5-inch and 7.5-inch widths to match 2x6 and 2x8 sill plates, sold in 50-foot rolls. Thickness options are 1/4-inch for standard applications and 1/2-inch for foundations with minor surface irregularities. Some premium sill seals include a polyethylene moisture barrier bonded to the foam. In termite-prone regions, borate-treated sill seal or stainless steel termite mesh may be required. Sill seal costs approximately $5 to $10 per 50-foot roll, making it one of the least expensive but most important air-sealing materials in the building envelope.

Dicas de Instalação

• •Unroll sill seal along the foundation just before placing sill plates.
• •Overlap seams by at least 6 inches.
• •Use PT-compatible sill seal — some foam degrades with treated lumber chemicals.

Erros Comuns a Evitar

• ⚠Forgetting to install sill seal — it is a code requirement in most jurisdictions.
• ⚠Not overlapping seams, leaving gaps for air infiltration.

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