Gift Card Amount:$50.00 High pH – dissolves almost

High pH – dissolves almost anything

low-gloss sealer for concrete

Versatile and handsome

It is substantially lighter in weight than slate

flat surface without shrinkage

Gift Card Amount:$50.00 High pH – dissolves almostGift Cards What better way to celebrate a birthday or holiday than with the gift of sustainable, non toxic building products! We offer gift cards in $25, $50, $100, $250, $500, and $1000 denominations redeemable for anything sold at Green Building Supply. A perfect gift that will suit any building project. Purchasing a gift card is quick and easy, just follow these steps: Choose the gift card amount and quantity of gift cards you wish to purchase.