SEMCO PreStain Color

Water-based color for X-Bond microcement, concrete, brick and natural stone

What it is

SEMCO PreStain Color is a water-based, reactive latex color system that gives lasting color to interior, exterior and below-grade surfaces. It is odorless, low in VOCs and UV resistant, and it enhances the natural look of the surface.

Where you can use it

  • X-Bond microcement
  • Unsealed and exposed concrete, stamped concrete and below-grade surfaces
  • Concrete block, tilt-up and masonry
  • Brick and natural stone

Key features

  • Water-based, reactive color with unlimited color selection
  • UV resistant and resistant to freeze-thaw damage
  • Odorless, low VOC to meet indoor air quality standards
  • Solidifies crumbling surfaces
  • Integral curing agent and weather sealer

Packaging

1 gallon pail, 5 gallon pail and 55 gallon drum.

How much PreStain do you need?

Pick your surface and the number of coats. As a baseline, SEMCO PreStain covers about 1,250 sq ft per 5 gallon pail at two coats on X-Bond. Porous surfaces use more, so always test a small area first.

Find your color

Match a paint color to a SEMCO color with our color matcher.

How to apply

  • Prepare the surface for your substrate (see the SEMCO SIP Manual) and sweep off debris
  • Spray with an airless sprayer (tip size 17 at about 400 PSI), HVLP, or any sprayer that atomizes liquids
  • Hold the gun about 18 inches from the surface and spray even, overlapping coats
  • Apply at 50°F to 90°F
  • Clean up with soap and water

Build your color

Two coats give a more transparent finish. Spray more coats, up to seven, for a very opaque finish. Wait between coats; drying time depends on temperature and humidity, so treat each project individually.

Always test a small area first, wear gloves and eye protection, and do not mix PreStain with other cleaners. Read the label and Safety Data Sheet before use.

FAQ

What surfaces can I use PreStain on?

X-Bond microcement, unsealed and exposed concrete, stamped concrete, concrete block and masonry, brick and natural stone, on horizontal, vertical and below-grade surfaces.

How many coats do I need?

Two coats give a more transparent finish. For a very opaque finish, spray more coats, up to seven.

How long between coats?

Drying time depends on temperature and humidity. As a guide, expect about 30 minutes at 72°F, around 20 minutes at 90°F, and up to about an hour at 45°F. Treat each project individually.

How long until it cures?

You can walk lightly on it after about 48 hours. Full cure depends on temperature: about 4 days at 90°F, about 7 days at 72°F, and about 10 days at 45°F.

Do I need a sealer?

Yes. Seal PreStain with a SEMCO sealer to protect the finished color.

Is it safe to use indoors?

PreStain is odorless and low in VOCs, designed to meet indoor air quality standards. Wear gloves and eye protection when applying, and read the label and Safety Data Sheet before use. Safety Data Sheets are available on request.

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