WPB Enterprises Inc.

Oldest & Most Experienced
Pennsylvania Radon Mitigation Company

We guarantee Radon levels below 4.0 pCi/l

Radon Mitigation Installation Tips for Mitigators & Others

Active Soil Depressurization (ASD) for:
Radon, TCE  &  VOC removal

2007 & 2012 Crawl Space Membrane Adhesive Test

Four typical crawl space membranes are listed below.  In the left column are commonly available sealant materials.  Each of the sealants was used to adhere 6" by 6" pieces of the different membranes to a concrete masonry block.  After the membranes had two weeks to dry the holding power of each adhesive was measured in pounds of pressure.  The higher the number the great number of pounds of pulling pressure was required to remove the membrane from the concrete block.  Note that some adhesives work excellent for one type of membrane but have little holding power for another type of membrane.  This test is only an approximation of the holding power of each adhesive.

PDF of Adhesive Test

Caulks/Glues Reinforced
6 mil
Poly
Rufco 400 black side
4.5 mil
Rufco 400 white side 4.5 mil Dura Skrim
black side
6 mil
Dura Skrim
white side
6 mil
EPDM
45 mil reinforced
Titebond Radon Sealant < 1 5 3 2 1  
Eternabond Adhesive Tape 16 23 22 27 26  
Nuflex 110 Sealant Butylique 18 6 5 25 25 9
Dupont Siliconized Acrylic Airtite 8 16 30 2 30  
Geocell 3300 1 5 4 2 1 60
Geocell 2000 30 4 5 < 1 5 55
Pecora Dynatrol i-XL < 1 4 4 4 1 60 +
Loctite PL300 < 1 3 4 1 1  
CRL Polyurethane M66L < 1 6 6 1 1 60 +
Loctite Power Grab < 1 < 1 < 1 < 1 < 1  
Liquid Nails Heavy Duty Const. Adhesive < 1 2 1 < 1 < 1 16
Sika Const. Adhesive Urethane < 1 < 1 < 1 < 1 < 1 10
Sika Const. Sealant Urethane < 1 < 1 < 1 < 1 < 1 30
PurStick Professional Gun Foam < 1 < 1 < 1 < 1 < 1 10

Color Coding Speed Bits

We use speed bits in portable drills to quickly change bits from Philips, to drill bit, to 1/4 nut driver to 5/16 nut driver.  We love the DeWalt 9 volt battery drill because it has plenty of power for these small chores and its light enough to carry in a side pouch on our tool belt.  I have no use for 14 and 18 volt drills. They are too heavy.  We do use an 18 volt sawzall for cutting through the roof and I would consider a 24 volt hammer drill for test holes through the slab.  My tip however is for the small speed bits.  They are small enough that they get lost in the grass when they fall out of your pouch and you tend to fumble around for them in a pouch or tool box.  Go to the electrical department of home depot and buy 4 different colored bright tapes.  Decide on which color is for which speed bit and wind a few wraps of colored tape around that style.  We use blue for 5/16 nutdriver, red for 1/4 nutdriver, Purple for #2 philips, white for #1 philips.  Now we can quickly grab the correct bit and when it drops in the grass it is easier to spot.

To see some pictures of what a radon system looks like
go to the WPB Job Photos page.

2017 Bill Brodhead          Call WPB Office  at  610 346-8004 for Estimates or Information