Frequently Asked Questions About EIFS

Here are the most commonly asked questions by homeowners about EIFS.  We are pleased to offer our perspective in the responses provided to each question.

If you have a specific question that is not directly addressed below, feel free to submit it through our contact form and we will be happy to respond as quickly as possible.


Exterior Insulation and Finish Systems (EIFS) are non-load bearing, exterior wall cladding systems that consist of insulation board that is either adhesively or mechanically attached to the substrate; an integrally reinforced base coat; and a protective textured finish coat.

The R-value of an EIFS is determined by the thickness of the continuous insulation layer. The below chart outlines R-values of the most common insulation used in EIFS; 1 lb. density expanded polystyrene (EPS).

Type I, 1 pcf density EPS with R Value of 3.8/inch
1 pcf Density EPS Thickness R-value @ 75F
1” EPS 3.8
1.5” EPS 5.7
2” EPS 7.6
2.5” EPS 9.5
3” EPS 11.4
3.5” EPS 13.3
4” EPS 15.2


Yes, all of our finishes can be painted.

Yes, they are included in both the International Building Code (IBC) and International Residential Code (IRC).

Generally the minimum thickness of EPS for EIFS is 1 inch. Locally, where clearance may be an issue (window and door returns, etc.). 3/4 inch thickness is acceptable. Since this limits rasping, it is not recommended to be used over full wall areas. Also some EIF systems, such as Infinity® and Outsulation® MD System®, have internal tracks and grooves and will require
minimum 2 inch EPS.

Building codes generally limit EPS thickness to 4 inches. In some cases thicker foam is permitted provided that full scale testing has been performed to justify it.

Most colors fade very little due to sun oxidation. However, the darker the color the more it will fade. Most systems are specially formulated with 100% acrylic binder, which gives EIFS superior resistance to fading or yellowing. The systems tend to maintain their original appearance over time. Even if the surface is scratched, the same color appears beneath the scratch.

This varies for many reasons. The more square footage, the better the price. Some trim is included at no charge but if there is extensive trim it is additional. The different systems also vary in price. It is very comparable to brick and generally runs from $7 – $10 per square foot to as much as $12 per square foot for projects under 1000 square.feet.

General cleaning as needed and inspecting caulk once a year and replacing as needed. For more info on cleaning info click on the tab above labeled “EIFS Info”.

All technical specifications for each product are readily available upon request.

Barrier systems have a moisture barrier such as a liquid membrane, tar paper or Tyvek (house wrap) between the foam and the substrate while drainage systems have either a drainage mat or a channeled foam (a type of gutter system) between the Tyvek and the EIFS. We use both systems but recommend liquid membrane systems.

Yes, we do fast repairs to bring your home up to current manufacturer’s specifications.

Yes, and it will have a lot less weight on the structure. With more square footage, the cost per foot will be much less. It will be energy efficient. You will need expansion joints to avoid stress cracks.

Yes, each manufacturer has an extensive selection of colors and textures and we can also custom match any color.

If you can dream it we can build it. We have laser cornice columns, crown moldings, and unlimited designs on the trim. EIFS can also be used indoors by eliminating the foam and directly applying the finish over drywall or block.


Cultured Stone®  products are cast in molds taken from carefully selected natural stone, using a process that faithfully captures even the faintest detail.  Each color and texture uses its own blend of Portland cement, lightweight natural aggregates and iron oxide pigments.  Even on close examination, these manufactured stones look and feel just like the originals.

The installed cost of Cultured Stone products is usually much lower than the installed cost of natural stone.  Cultured Stone products require no additional footings, foundations or wall ties, and installation time will be considerably less than when using natural stone.

While building codes allow up to 15 lbs per square foot, the average uninstalled weight of Cultured Stone products is approximately 8-12 lbs. per square foot.

Just as natural stone, Cultured Stone products will experience normal weathering during the life of the installation, no different than any other cement based material.  See actual printed warranty for details.

As Cultured Stone products are a lightweight concrete material, they typically last as long as any quality concrete or masonry material such as concrete block, brick etc. Cultured Stone products carry a 15 year limited warranty.

Yes. Cultured Stone products comply with applicable building code requirements.

Cultured Stone products may be applied over most properly prepared, clean, untreated, structurally sound wall surfaces such as wood, wallboard, masonry or metal.

Cultured Stone products are installed using
Type N or S Portland cement mortar over a properly prepared substrate.

Yes. Cultured Stone products are suitable for both, and allow  you  to bring the outdoors  inside, emphasizing design and continuity in color and texture.

Occasional washing to remove surface dust and dirt is all that is required.  Cultured Stone products are virtually maintenance free. Never use any harsh detergents or chemicals on Cultured Stone products.

1 ¾” average (from 1″ to  2 5/8” depending on texture).