Prices, Promotions, styles, and availability may vary. Our local stores do not honor online pricing. Prices and availability of products and services are subject to change without notice. Errors will be corrected where discovered, and Lowe's reserves the right to revoke any stated offer and to correct any errors, inaccuracies or omissions including after an order has been submitted.

Foam Water Resistant Board Insulation

8 results

Kingspan Insulation R- 5 , 1-in x 4-ft x 8-ft Unfaced Foam Board Insulation

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for pricing and availability

4.5
81
Energy Star Qualified

GreenGuard R- 5 , 1-in x 2-ft x 2-ft Unfaced Foam Board Insulation

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for pricing and availability

4.7
175

Kingspan Insulation R- 2.8 , 0.50-in x 4-ft x 8-ft Unfaced Foam Board Insulation

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for pricing and availability

4.4
66

Kingspan Insulation R- 10 , 2-in x 4-ft x 8-ft Unfaced Foam Board Insulation

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for pricing and availability

4.5
99

Kingspan Insulation Q250 Fanfold Siding Underlayment R- 0.9 , 0.2-in x 4-ft x 48-ft Faced Foam Board Insulation

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3.8
9

Kingspan Insulation R- 3.75 , 0.75-in x 4-ft x 8-ft Unfaced Foam Board Insulation

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for pricing and availability

4.4
43

Kingspan Insulation GreenGuard Unfaced XPS Foam Board Insulation R- 7.5 , 1.5-in x 4-ft x 8-ft Unfaced Foam Board Insulation

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5.0
1
Energy Star Qualified

Owens Corning FOAMULAR R- 5 , 1-in x 2-ft x 2-ft Unfaced Foam Board Insulation

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for pricing and availability