Installation Instructions

Allura Fiber Cement Siding Installaon Manual

Wear rubber gloves and goggles when applying the solution. Protect any shrubbery

with a plastic drop cloth. As mildew spores can soon settle on the cleaned surface and

renew their growth, a mildew resistant paint specifically recommended by your paint

supplier as suitable for Allura Fiber Cement Siding should be applied as soon as the

cleaned surface dries.

Refinishing

Exterior wall finishes weather most rapidly on those portions of the building that

receive the greatest exposure to sun and moisture. Areas receiving maximum exposure

generally will need finishing sooner than other areas.

The frequency of refinishing will depend on the climate and exposure; the type,

quality, and color of the paint; the method of application; and number of coats of paint.

Specifically, refinishing is indicated if: the surface is discolored and blotchy; the coating

is cracked, peeling or scaling; or the coating appears thin or porous and is chalked to the

point where it no longer protects or hides the surface.

Surface Preparation

The degree and type of required surface preparation depends on the condition of the

old finish. Loose paint material should be removed by sanding and scraping. The surface

should be cleaned before painting as described in the Washing section. If the old

surface is sound, re-priming is typically not necessary.

Use only top quality, exterior type, acrylic latex primers. Confirm the compatibility of

your primer and finish coats with your paint supplier. Allura recommends l00% acrylic

latex primer and paint system, using only the highest grade paints. Check with your

paint supplier for compatibility with Allura Fiber Cement Siding.

Efflorescence

What Is It?

Efflorescence is a naturally occurring, white, powdery deposit that can appear on

cement-based building materials (including bricks, cement walls, grout, and fiber

cement). It is the result of a process in which moisture draws salt crystals to the surface,

evaporates, and leaves a chalky substance behind.

Efflorescence occurs when all three of the following conditions exist:

1. Water-soluble salts are present in the building material.

2. There is enough moisture in the wall to turn the salts into a soluble solution.

3. There is a path for the soluble salts to get to the surface.

Efflorescence may also be a sign of water intrusion behind the siding. Make certain

that all openings are properly flashed and there is no water intrusion due to over-

driven nails.