Postsaver, a UK-based leader in timber protection, has launched DeckPRO in the US—a heat-activated wrap designed to stop ground-line rot in decking foundation posts.

Following recent expansions into the US fencing and utility sectors, Postsaver is now targeting the decking market. The move addresses a growing demand for longer-lasting, code-compliant timber solutions as contractors seek to reduce premature failures and costly callbacks. Ground-line rot—caused by moisture, oxygen and fungal activity where the post meets the soil—remains a leading cause of structural timber failure. DeckPRO uses the same dual-layer barrier technology that Postsaver has refined over 30 years.

“Our mission has always been to extend the life of structural wood in ground contact,” said Tony Young, director of sales at Postsaver. “DeckPRO brings that proven technology directly to the US decking market.”

How it works

DeckPRO is a proprietary dual-layer wrap applied to the most vulnerable section of a post. When heat is applied—using a propane torch or weed burner—the inner thermoplastic sealant bonds tightly to the timber, creating an air- and watertight seal. Simultaneously, the durable outer layer shrinks around the post, forming a second shield against moisture and fungal attack. Unlike surface tapes or moisture-trapping barriers, DeckPRO integrates with the timber for long-term protection.

The product is designed for use with pressure-treated timber rated for ground contact, complementing modern preservatives. With the rise of faster-grown plantation timber—which contains more juvenile wood and variable treatment penetration—Postsaver says an extra layer of protection at the ground line is increasingly critical.

Testing, approvals and installation

DeckPRO has been independently tested in long-term field trials and carries a limited lifetime warranty of 40 years. It has also received ICC approval, complying with both the International Building Code (IBC) and International Residential Code (IRC), making specification straightforward across the US.

Installation takes about 80 seconds per post. After heating, the sealant quickly reforms into a solid barrier, allowing posts to be installed within minutes. DeckPRO is aimed exclusively at professional users—deck builders, landscapers and fencing contractors—and will be available through US distribution partners, with nationwide fulfillment by The Garham Group.

A sales advantage for contractors

As outdoor living projects grow in scale and cost, contractors face pressure to deliver long-term reliability. “It’s easy to maintain everything above ground,” Young noted. “But what’s happening underground is often where failure begins.”

Offering DeckPRO helps contractors differentiate themselves on premium projects. The launch coincides with NADRA’s Deck Safety Month, and Postsaver—now a NADRA member—says it is committed to building safer, more durable decks from the ground up. For contractors focused on quality, DeckPRO turns the hidden foundation into a visible selling point.

Read the full article in the June issue of Pro Landscaper USA.