what are you gonna do there's a product for that so not only is it flexible but it's sandable so
using this i'm gonna make this disappear forever okay so we're here in this really cool home gym
where we recently installed some cove lighting in this corner here as you can see there's a
little bit of cracking happening so what happens a lot of problem that we run into quite often is
when you're joining two dissimilar materials what tends to happen is if you want them to
be smooth and perfectly flush even if it's glued nailed screwed those two surfaces being made from
different products causes them to shrink and grow and move and crack at different rates so
what invariably happens is you get these hairline cracks where the two joined so even though this
mdf joining this drywall bulkhead is glued nailed and screwed together it still shifts just enough
to create that hairline crack so what do you do there's not a ton of options but one of the things
you could do is you could use a material that has some flex to it like a caulking for example if
we were to fill this seam with caulking it would allow that those two materials to move separately
and the cracking probably wouldn't happen the only issue with that is wherever the caulking overlaps
the surface you're going to find that there's a skin because you can't sand caulking you'll never
have a fully smooth surface if you need something that's flexible but also sandable what are you
gonna do what are you gonna do what are you gonna do well lucky for you there's a product for that
so that makes a flexible spackling so this spackling product has
more elasticity than your typical spackling which also allows it to sand smoothly so not only is
it flexible but it's sandable so this is going to be able to sand smooth and have the flex to allow
these two surfaces to still move shrink grow at different rates without cracking so using this
i'm going to make this disappear forever watch this the first thing i'm going to do is i'm going
to actually open this crack up a little bit deeper so that this backlink has an area to sink into
it to sink into if i were to just spackle over this the spackle's going to have a hard time
getting into that crack and what we want is for this spackling to get inside the crack as
well as on top so i'm just going to use my knife you just want to open this up a little bit more
nice curly
okay so now the hairline crack is more of a cavern or a canyon but that's good that's what we
not want actually
i'm just gonna smoosh that spackling into that crack
make sure i get it all the way in there it's back in the crack
this is the phase we like to call spack in the crack get that's back in the crack
okay so coat one of the spackles in there i'm gonna let that set up
and i'm gonna come back and do one more coat of that sand it flat and that crack should be gone
for life okay first coat's dry time for coat two sand it back paint it up bob's your uncle
so with that second coat on there i've over filled slightly
so i can sand it perfectly smooth and have that crack disappear
okay so our spackling is dry i've sanded it back it's nice and smooth
now it's time to paint it i've got the wall paint and a mini roller here
handy pail and all i'm going to do is just paint over that and feather out the edges
so whenever you're painting over a patch and actually a good practice for painting
in general is two coats is always better than one the first coat over a fresh patch of spackling or
compound will flash meaning that the mud is going to show through you're going to see a
difference in sheen so the first coat seals it the second coat blends it into the rest of the wall
okay so as you can see good as new it's got some flexible spackling in there in
case these two things shift at different rates it should be able to withstand that
no problem this should be the last time i'm up on this ladder talking about this corner
flex flexible top
you