We have answered this question once and for all, and to make it as thorough as possible we grabbed five different types of wood along with four different possible wood paints. We painted our wood samples with masonry paint, exterior gloss, fence paint and finally allcoat. Let’s find out how the masonry paint got on in this mega test!
So below are all of the different squares of paints I will be testing. We will test each paint, both with a primed piece of wood, and an unprimed piece to see how much of a difference priming the wood first makes.
I applied two coats of paint to each sample, so the primed pieces ended up with three coats (1 coat of primer and two of the paint of choice).
Painting the wood
The masonry paint went onto the wood absolutely fine. It felt very similar to painting with the exterior gloss. The coverage was good but not excellent, without primer it would take three coats of the masonry paint to get really good coverage.
Dry time was relatively quick so if you are painting a large area like say a shed you wouldn’t have to wait long between coats at all, the paint was dry enough to apply another coat within two hours.
Did it adhere?
Now all the pieces of wood had been left to dry overnight after their final coat it is time to test how well the paint has adhered to the surface.
I grabbed a rough piece of timber and scratched it across the surface of the painted pieces to see if any of the paint came away. Let’s see how they all got on.
Masonry Paint on Plywood – Tested
Above we have the results for Masonry paint on Plywood. As you can see the paint has covered well, with the unprimed piece looking like it probably needs one more coat(which would be it’s third) to finish it fully.
The paint has adhered to the Plywood excellently, nothing came away when I scrubbed it with the rough timber, this has definitely worked and the only thing left to test is how it performs outside in all elements.
Masonry Paint on Pine – Tested
Now for the same test but on a piece of pine. As you can see on the right-hand side of the image the unprimed piece of wood again looks like it could do with an additional coat of paint.
Masonry Paint on MDF – Tested
Now onto MDF, MDF can be a little tricky for some paints as it has a really absorbent surface that can suck up your paint so it will be interesting to see how the masonry paint got on, especially on the unprimed piece.
Again looking at the final result you will definitely need three coats if you don’t plan on using a primer, you can still see a few marks in the sample on the right.
When it comes to surface adhesion though the masonry paint again excels, it has stuck brilliantly and even when attacked quite aggressively with a piece of rough saw wood there was no chipping or flaking.
Masonry Paint on Fencing Timber – Tested
So we move on to fencing timber. This rough sawn timber is commonly used in fencing and could be a great application for masonry paint. After all, we commonly paint fences not only for the nicer appearance but also to prolong the life of the wood, lets’s see how the paint got on.
The masonry paint has actually covered really well here in just two coats, better than a lot of the other wood types.
Adhesion was once again excellent, with no problems here at all.
Masonry Paint on Chipboard – Tested
So we have reached the final wood type, chipboard. Chipboard is commonly used as flooring in newer houses and in lofts. But can you paint it with masonry paint?
The paint went on really well again and covered the wood well. The non-primed sample probably requires another coat to be perfect.
As far as adhesion goes both samples were great. You can see a chip on the right-hand sample bit this is where a piece of dirt which had been painted over was knocked off, so my fault rather than the paint
So for the next section of our test, I will move all these samples outside into the elements. I will check on them periodically and update you on how they have survived, so keep checking back!
6 Months Outdoors
So the wood samples have been sitting outside now, fully exposed to the elements, for around six months. I think it’s time to take a look at them all and give you guys an update.
So here are all the samples, looking pretty good. But let’s have a closer look at them all one by one as there are a few interesting things going on.
The pine has held up really well so far and there is no visible difference between the primed and unprimed pine.
So far so good, it looks like masonry paint will protect pine that is left outside.
Again, very much like before. The MDF has held up brilliantly, both the primed and un-primed still looking as good as new.
Another one that is holding up perfectly and with no difference that I can see between the two samples.
Like all of the other woods so far the masonry paint has done a great job of protecting this fencing timber.
Now we finally have something to talk about. The chipboard has swelled quite a bit and gone lumpy. This obviously means water has been getting in somewhere.
You can also clearly see that the primed one has fared a lot better so far. So just adding that extra layer of paint has helped to seal it. Although it has still gone a little lump, but still nowhere near as bad as the sample without primer.