The gap between Division 3 Concrete and Division 9 Finishes (flooring) is a terrible place to be for the General Contractor, Flooring Contractor, Consultant and Developer when connecting the divisions isn’t properly planned. For years, the construction industry has dealt with this issue by avoiding it until the flooring contractor arrives on site to reject (quite rightly) an unacceptable surface. Now what? Short cuts, arguments and threats of litigation for non-performance! For this reason, we created the HCU (Hydraulic Cement Underlayment) Committee to review 1. Why the problem exists 2. Specification solutions that ensure early planning and budgeting, and 3. How to best share solutions with the construction industry. Thank you to the following industry professionals for participating on the committee to shed light on this very important & contentious issue: Monica Baillie (Landmark Architecture), Matt Dalkie (Lafarge), Don Styka (Tarkett), Kathleen Kompauer (KDR Engineering), David Sherley (Custom Building Products), Rob Visscher (Atmosphere Floors), Michael Pereira (EllisDon), Kelvin Klapak (Yellowridge Const.), David Randall (Mapei), Diana Klingner (Canadian National Trades). We look forward to sharing our progress over the coming months.
Seam sealer (adhesive) prevents cut carpet seams from unravelling after installation and it's required according National Floor Covering Association specification
Seam sealer (adhesive) prevents cut carpet seams from unravelling after installation and is required according National Floor Covering Association (NFCA) specification, The Carpet and Rug Institute (CRI) 104/105 standards and Manufacturer installation guidelines for warranty purposes. To save installation time, seam sealer is often not applied by the installer which leads to the problems such as shown in this image. Seams will quickly unravel in exposed areas as they are constantly tested by vacuuming, dragged furniture legs and foot traffic. It's easy for an inspector to check for the presence of seam sealer after installation using an inspection light, however, it's not easy for the installer to correct the issue afterwards and yet this is one of the most common problems we experience when inspecting carpet installations. www.nfca.ca
Correcting concrete slab surfaces prior to floor covering installation requires time, money - and is outside the scope of work for the trade of 'Floor Covering installer'
Correcting concrete slab surfaces prior to floor covering installation requires time and money and is outside the scope of work for the trade of 'Floor Covering installer'. This work can however, be taken on as a billable extra. The following is an excerpt from the NFCA Floor Covering Reference Manual regarding this... 2. The General Contractor (GC) shall provide a substrate surface acceptable for the installation of specified flooring materials. Unless otherwise defined by local trade jurisdiction, or agreed to between the GC and the flooring contractor prior to commencement of the Work, the GC will be responsible for: .a Filling and levelling all substrate surfaces including control and construction joints, structural cracks, grooves, gaps, and other irregularities. .b Grinding smooth all ridges, undulations, projections and areas of carbonation and scaling. .c Correcting low density or powdery concrete surfaces in order to provide substrate surfaces that are acceptable for the installation of flooring materials. .d Major patching or installation of an underlayment using products that are suitable for substrate surfaces, and compatible with flooring materials. For full details go to www.nfca.ca
National Floor Covering Association (NFCA) specifications for each flooring category (Carpet, Resilient, Hardwood, Laminate) include a pre-installation site meeting, and a review of the following; product acclimation requirements, indoor environmental conditions, moisture and alkalinity testing, sub-floor flatness requirements, bond testing, mock-up, installer certification and contractor bonding. All this takes place months before the floor installation starts allowing the General Contractor time to plan for the difficult process of installing flooring properly. For more information on the Quality Assurance Program go to www.nfca.ca/inspections.html