Installing Engineered Hardwood Floors Over Concrete

Engineered Handscraped Angelim Black

Installing Wood over Concrete– Wood over Concrete Floors

Engineered Angelim Black Hardwood Floors

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Color: Black
Wood Type: Angelim
Dimensions: Width 4-3/4" - Thickness 1/2" - 1' to 4' average length 2/5'
Wear Layer: 1.5mm
Style: Handscraped
Construction Type: Tongue and Groove
Installation Type: Nail/Staple/Glue

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Considering a do it yourself project that involves Installing Hardwood Floors can be somewhat intimidating. Here are the steps that should be taken to install tongue and groove engineered hardwood floors over concrete both above and below grade. The different methods discussed here will include the recommended installation for hardwood floors over concrete as a floating floor and installation by glue.

Pre-installation Requirements for both Methods:

1. The jobsite is structurally complete and properly enclosed. All doors and windows must be installed. All exterior grading should also be complete. Gutters and downspouts need to be installed, functional and directed away from the structure

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2. Concrete, plaster, masonry, drywall, paint, wall coverings and subfloor must be completely dry. If at all moist, the humidity levels of the jobsite will be compromised.

3.All heating, air conditioning and ventilation systems should be working 14 days prior to installation and throughout the life of the floors maintaining a temperature between 60 - 75 degrees as well as 30% - 50 % humidity.

4. Wood floors are not recommended in full bathrooms; consult the manufacturer or customer service representative for further details. You can call 877-83-REALWOOD or 877-837-3259

Concrete Sub-Floor Requirements

  1. The concrete must be dry, free of wax, paint oil and other debris
  2. Scrape smooth and sweep prior to installation.
  3. the Concrete floor must be flat
  4. The concrete will need a minimum of 30 days drying time for a reliable moisture reading is necessary
  5. The concrete must be tested for moisture

Moisture Tests for Concrete
After the concrete has had 30 days to dry you may conduct a moisture test. The two most common test for concrete are the Calcium Chloride Test and the Tramex Concrete Moisture Encounter Meter.

When using the Calcium Chloride Test the moisture vapor emissions must not be more than 3 lbs per 1000 square feet over a period of 24 hours. A test must be performed everything 250 square feet. The Tramex Concrete moisture encounter meter will display a number. This number should not exceed 4.5. For more information for purchase of a moisture test kit please call 877-83-REALWOOD or 877-837-3259.

Glue Down Applications of Hardwood over a Concrete Slab or Acoustic Concrete

Concrete Slab
When installing engineered hardwood over a concrete slab the engineered hardwood floors can be glued directly to the high compression slab or floated and glued at the seam with an appropriate adhesive. For the glue down application the Calcium Chloride test is recommended, if the moisture content is high, the use of glue as a sealer will be compromised. Especially pay attention to areas near plumbing and exterior walls.

Acoustic Concrete
The glue down method over an acoustic concrete floor is the more involved method. The first thing to check is to make sure that the sub-floor has a compressive strength of atleast 2500 PSI. Secondly, acoustic concrete has high levels of gypsum which requires that the surface must be coated with a primer or surface hardener (consult the concrete manufacturer). Also, check with the adhesive manufacturer about the use of their glue on acoustic floors. High PH levels will eat through the glue line so making sure the product you use is compatible with acoustic concrete. Finally perform a thorough moisture test.

 

 

Recommended Checklist

1. Measuring tape
2. Chalk line reel
3. Rubber mallet
4. 3-M Blue Tape
5. Broom
6. Putty knife
7. Floor protectors
8. Pencil
9. Portable saw and hand saw
10. Table saw or band saw
11. Crowbar
12. Hammer
13. Calcium Chloride Test (may be needed)
14. Leading brand of hardwood flooring cleaner
15. Quality moisture meter
16. Additional Tools for Staple-Down Installations
17. Drill with 1/16” Drill Bit
18. 4d-6d Flooring Nails
19. Nail Set

 


 

Floating Hardwood over a Concrete Slab or Acoustic Concrete

Concrete Slab or Acoustic Concrete
If floating the Engineered Hardwood Floors over a concrete slab or acoustic concrete the most important factors are to make sure that the sub-floor is level. A moisture barrier and appropriate padding are required for this method as well as an appropriate moisture test.

Learn More:
If you want step by step instructions as to how to actually lay your engineered hardwood floors please visit www.factoryhardwoodfloors.com and see our information tab. There we have various instructions for installation, however, we recommend you float or glue a hardwood floor over concrete.

If you do not already have a floor picked out please see the samples section of our website. We will ship you 5 free samples right to your door!