It checks today's price at every store, compares the alternatives and answers in about a minute.
Black Jack 0318-Ga is a liquid synthetic rubber roof patch in a 30 oz container. It combines Penetrex penetrating oil with liquid rubber to soak into cracks and form a flexible, watertight seal on shingles, built-up roofs, SBS modified roofs and metal. It is a brush-or-trowel cement for spot repairs rather than a full coating, and larger repairs should be reinforced with fabric. Reviewers rate it well overall, with most complaints about messy application and the need for a second coat on bigger gaps.
In stockSold by Supply the HomeReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
Owners rate it 4.3 out of 5 and mostly report that it seals small leaks and holds up through weather. Complaints center on messy handling and the amount needed for bigger repairs.
This Gardner-Gibson Black Jack roof patch is a liquid synthetic rubber product for repairing roof leaks. It is a flexible plastic cement made with liquid rubber. It forms a watertight bond.
The formula contains Penetrex, a penetrating oil that reaches deep into cracks and forms a complete seal. It is made to be used year round.
It can be used on shingles, built-up roofs, SBS modified roofs, metal roofs and many other surfaces. Larger repairs should be reinforced with a strip of reinforcing fabric.
