Can I paint OSB plywood?

OSB's open strands readily absorb the paint, requiring two or three coats of primer to close up the pores. Older OSB will be incredibly porous, requiring several coats of paint plus primer. Particularly old OSB that is beginning to fall apart cannot be painted; the paint will not help glue the OSB together.

What's the best paint to use on OSB board?

Some painters recommend using only oil-based paint for the topcoat, but as long as you use oil-based primer, you shouldn't have any problem using acrylic latex paint.

Is it better to paint or stain OSB?

Painting OSB

Paint is the far better option to go with if you want to prevent the oriented strand board from becoming wet, rotting, and disintegrating.


Which side of OSB Can you paint?

The nail lines on the screened side are paint but the grade stamp on the smoother side is ink and may be more difficult to cover. Ask your paint dealer to suggest a sealer as a prime coat. In that application it would be a good idea to paint both sides and all edges before installing the panels.

How long will OSB last outside if painted?

OSB, which is protected from the elements or sealed with paint or stain, can last for decades. Some exterior OSB wall panels are even guaranteed for 50 years. There are numerous cabins and outbuildings clad in OSB and painted or stained on a 3 to 10-year cycle, that have been going strong for decades.


How to Paint an Internal OSB Wall?



How do you make OSB look good?

8 Ways to Make OSB Look Good
  1. Sand the OSB. Perhaps the easiest and fastest way to make OSB look good is to simply sand it. ...
  2. Paint the OSB. ...
  3. Sand and Paint the OSB. ...
  4. Stain the OSB. ...
  5. Sand and Stain the OSB. ...
  6. Apply Plaster or Drywall to the OSB. ...
  7. Apply Drywall, Sand, and Paint the OSB. ...
  8. Cover the OSB with Something Else.


Can I paint OSB for exterior use?

Exterior paint will not only make your OSB attractive, but it also adds a layer of water resistance. So, the paint should be added before applying the waterproof so that the sealer can protect the topcoat.

Why is OSB painted green?

A story on green building in Saturday's Home & Real Estate section states that it is a green product because it conserves forest resources by using wood chips that otherwise would be wasted.

Why is OSB slick on one side?

The Intent of Surface Roughness

The reason OSB has one rough side is simply for safety. The rough side provides safety for the workers at the jobsite. Contractors working on a sloped roof will rely on the roughness of the board for traction when working.


What do you paint OSB with?

If possible, stay away from water-based paints since OSB can swell when it contacts water or a lot of moisture. Prime with two coats of an oil-based primer, such as Kilz Complete or Sherwin-Williams ProBlock.

Is OSB board waterproof?

As a general rule, most OSB are water resistant. Due to their construction process using wood strands, resins and wax they come fairly water resistant. However, if you're looking for a truly waterproof OSB you need to make sure it is stamped stating so.

What do you seal OSB board with?

For cases where OSB is more likely to be exposed to moisture, it's a good idea to coat the OSB on the surface and edges with a waterproofing product, such as Thompson Water Seal, Flex Seal, or Liquid Rubber's waterproofing sealant. Even latex paint will work.

Is OSB stronger than plywood?

Osb is stronger than plywood in shear. Shear values, through its thickness, are about 2 times greater than plywood. This is one of the reasons osb is used for webs of wooden I-joists. However, nail-holding ability controls performance in shear wall applications.


Can you spray paint OSB?

No. If the customer is acting cheap by putting OSB on something and wanting you to spray it smooth with the idea that it'll look like MDF or something, then forget about it. Time to move on or educate them some. The stuff is very porous and you'll probably end up putting a primer and 2 coats of paint.

Should OSB be installed vertically or horizontally?

If the height of a wall is less than 8-feet, install the plywood (or OSB) vertically. If the height of a wall is greater then 8-feet, install the plywood (or OSB) horizontally.

What happens when OSB gets wet?

Your framing lumber and the oriented strand board (OSB) are going to be fine. The glues used to make OSB are water-resistant because the manufacturers know that virtually no one can build a home that won't get wet before the roof and siding is applied.

Is OSB board good for roofing?

OSB is now the most-used sheathing and subflooring material for new roofs and roof replacements. OSB is currently selling for less than plywood by approximately $3 per sheet, meaning a savings of several hundred dollars per conventional home.


Which is more expensive OSB or plywood?

OSB is less expensive than plywood. To build a typical 2,400-square foot home, OSB may cost $700 less than plywood. OSB is considered by many to be a “green” building material because it can be made from smaller-diameter trees, such as poplars, that are often farmed.

Can you sand OSB plywood?

OSB cannot be sanded to take on a particular shape, but a light pass with sandpaper will smooth out the surface so splinters don't scratch the bottom of the material you install over the OSB.

Is OSB more water resistant than plywood?

OSB takes longer to get wet than plywood but also takes longer to dry out. When used as a roof sheathing, this tendency to hold moisture means it can degrade faster than plywood when exposed to chronic leaks.

Will rain hurt OSB board?

Our OSB is rated “Exposure 1” and that means that it will withstand normal delays in construction. Normal delays and the rain you indicated will not affect the structural properties of the panels. Certainly it would have been better to have covered the roof with a tarp or roofing felt before it rained.


Can I use OSB to build a shed?

Using Oriented Strand Board is a tested way of reducing costs for building your shed. Plywood with similar properties currently costs about 30% more for an equivalent thickness.

Can you mud OSB?

Acceptable Types of Wood

You can apply drywall mud to any rough-grain wood surface. Plywood or oriented strand board (OSB) are good choices, but the mud will also stick to painted wood, as long as the paint is flat and not glossy. Drywall mud is not intended for outdoor use, so don't skim-coat a garden shed.