Cupping floorboards

It is really an unpleasant experience when you beautiful floor boards get cupping or crowning. Cupping is a specific type of warping when a panel becomes “U” shaped across the face, which is mostly caused by a moisture variance or imbalance through the thickness of the board. “It is an obvious sign of a moisture problem in either the substrate ie the concrete slab to which the floor is fixed, or a damp sub-floor area. It can also occur where the floor has been flooded with water and the top surface of the board dries out or absorbs less water than the lower portion of the board. … Another common scenario is where boards are heavily exposed to sunlight (eg a sun room)  compounded with restricted airflow to the bottom surface.” Repairs should not be made before identifying the source of moisture, which might be

  • Leaks: building, plumbing, overflows, dishwasher or refrigeration…
  • Rain through an open window or spillage
  • No curtain or blinds protect board from too much sunlight
  • Poor drainage
  • Wet or damp basements
  • Sub floors with excessive moisture
  • Bad ventilation

Sanding and polish should be taken after the source of moisture is resolved and the floor stabilized. For floating floor boards, they usually can be replaced easily by new boards if you have spares available.cupped floor

How to check the surface of the subfloor

Before flooring, we need to check the surface of the subfloor if it is suitable for flooring on directly.

Planeness. When a straightedge 1.5 m long is placed on the surface at any position, no part of the surface shall be more than 6 mm below the straightedge.

Smoothness. When a straightedge 150 mm long is placed on the surface at any position, no part of the surface shall be more than 1 mm below the straightedge.

It’s an easy way to do before starting flooring.



Two methods for skirting and beading

There are basically two methods to deal with the existing skirting when we lay the floor.
Method 1: Remove skirtings and install the new/old skirting back after laying the floor.
Method 2: Leave skirtings in place and cover the expansion gap by nailing a bead of quad to the skirting.
Method 2 is the easier way. When using method 1, we have remove the skirtings first, which are usually fixed to the wall by nails or glue. Some minor damages may be caused to skirtings and wall. Some touch-up paints have to be done after installation.

AC Rating on Laminate Flooring

When we are dealing with cliets, we are often asked how durable is the laminate flooring. Here is a widely-accepted standard, AC rating to denote the durability level of laminate flooring. The rating of the floor boards are decided by considering the laminate’s resistance to brasion, impact, stains and cigarette burns. According to the product’s durability, the rating can leveled from AC1- AC5

AC1: House, One Person, Residential, Moderate traffic: Suitable for bedrooms or guest rooms;

AC2: Residential, General Traffic: Suitable for living rooms or dining rooms

AC3: Residential, Heavy Traffic: Suitable for all areas

AC3: Commercial, Moderate Traffic: Hotel rooms, small office

AC4: Commercial, General Traffic: Office, boutique, café

AC5: Commercial, Heavy Traffic: Public buildings, department stores

Usually our products are just AC3, because the course surface texture of AC4 and AC5 is too rough for bare feet, which will make users very uncomfortable.