Melt-in fillers are ideal for use in crack repair projects simply because unlike caulk tube and squeeze bottle fillers, they last longer. And while it may take more work to effectively repair a crack with a melt-in filler, the fact that it saves one from having to make frequent repairs usually makes it worth the effort. The following are melt-in filler crack repair tips that you will find useful.
Widen the crack
When dealing with extremely narrow cracks, starting by widening the crack is recommended. This is because widening the crack provides enough room for you to fit the melt-in filler into the crack. It also ensures that the filler has a good-enough support structure on which to hold onto, ensuring a longer lasting crack fill.
To widen the crack, use a diamond wheel. Simply dragging the wheel backwards on the crack will be enough to widen the crack. Dragging it over worn-out filler patches can also help to get rid of any old filler materials.
Clean the crack
After widening the crack, the next step is to get rid of any loose materials. This involves sweeping away any old filler pieces, removing any traces of weeds and scraping any loose asphalt granules. This is an important process mainly because it allows for better filler-asphalt bond formation, something that guarantees a longer lasting repair work. For more information on asphalt, contact a local professional.
Inserting the filler
After cleaning the crack, the next step involves inserting the filler into the crack. Using a flat blade screwdriver will make this easier and is thus recommended. Make sure that the filler fills the crack, but don't stuff the crack in such a way that it results in some of it sitting above the surface. If there is any bulging, simply use a knife to cut off any excess filler.
With the filler in place, use a blowtorch to slowly melt the filler. Using a sweeping motion is advisable as it helps reduce the risks of burning the filler. Keep in mind that a melted filler is what creates the best bonds and not a burnt one.
Applying the trowel patch
Let the filler sit for a couple of minutes before applying the trowel patch material. This is important as it allows it enough time to cool down and settle within the crack. After it cools down, apply the trowel patch material over the sealed crack and then use a trowel to smooth it over. Give it time to dry and if the repaired section appears depressed, apply another layer of the trowel patch material. Letting it dry thereafter will leave you with a durable crack repair work that will shield your driveway from extensive moisture damage.