• Utility Knife
  • Tape Measure
  • Straight Edge
  • Spacers
  • Tapping Block
  • Pull Bar
  • Moisture Testing Gauge

Rubber Headed Mallet Planks have attached underlayment. Do NOT use additional underlayment under the SPC planks.


Carefully check flooring material for any defects. Contact your supplier immediately if any defect is found. Defective planks should NOT be installed. We recommend allowing the planks to acclimate 24 to 48 hours prior to installation in a climate-controlled job site (see recommended room temperatures below). Store boxes flat (never on edge), with box ends open to allow air flow, and no more than 3 to 5 boxes high. Room temperature between 65°F-85°F should be maintained for a minimum of 48 hours before, during, and after installation. Remove quarter round, baseboard molding or cove base. Undercut doorway moldings the thickness of the flooring. Cartons must be stored horizontally at all times (never on edge) to prevent warping and protect the locking systems. Stack no more than 5 boxes high. Do not drop – protect carton corners and edges from impact. Dropping boxes on edges can cause interior damage to the locking system. Prepare substrate.


A wood subfloor must be smooth, flat and free of movement and deflection. If joist spacing is more than 19.2″ on center, a minimum of 3/4″ total thickness of subfloor is required. A 1/4″ underlayment grade panel should be installed over wood subfloor if the surface of the subfloor is not smooth and flat. Our warranties DO NOT cover any problems caused by inadequate substructures or improper installation of said substructures. Recommended underlayments include: APA Underlayment Grade Plywood A-C, B-C or C-C Plugged, ACCUPLY, SurePly, TECPLY, ULAY, C.S.A. (CanPly) and Proboard Basements and crawl spaces should be kept dry and well ventilated. Crawl spaces must have a minimum of 18″ from ground to underside of joists. Exposed earth should be kept 100% covered by a minimum of 6-8 mil black polyethylene vapor barrier and joints overlapped and sealed with a moisture resistant tape.


New concrete slab must cure for at least 90 days. Cascade SPC planks may be installed over on grade, above grade or below grade concrete subfloors. Concrete floors shall be constructed in accordance with the American Concrete Institute (ACI) 302.1 Guide for Concrete Floor and Slab Construction. Concrete shall be finished and cured according to ACI and have a minimum compressive strength of 3500 psi. Installation of moisture vapor barrier is recommended prior to pouring of on or below grade slabs. Moisture vapor transmission shall not exceed 8 lbs./1000 sq.ft./24 hours per ASTM F-1869 (Anhydrous Calcium Chloride Test). Moisture may also be tested according to ASTM F 2170 (Standard Test Method for Determining Relative Humidity in Concrete Floor Slabs Using in situ Probes). When tested according to this method, the internal relative humidity shall not exceed 85%. Cascade SPC planks may be installed over gypsum based underlayments.


SPC planks may be installed over most existing smooth, single layer, hard surface or uncushioned resilient flooring. Check resilient flooring for any curled areas around the perimeter or at seams and repair if necessary. Use a good quality cementitious based embossing leveler to smooth and fill the existing floor. Do not install over carpet, cushioned backed resilient floor, or any floating or loose-laid flooring

WARNING: Do not sand, dry sweep, dry scrape, drill, saw, bead-blast or mechanically chip or pulverize existing resilient flooring, backing, lining felt or asphaltic “cutback” adhesive. These products may contain asbestos Fibers or crystalline silica. Avoid creating dust. Inhalation of such dust is a cancer and respiratory tract hazard. Smoking by individuals exposed to asbestos Fibers greatly increases the risk of serious bodily harm. Unless positively certain that the product is a non-asbestos containing material, you must presume it contains asbestos. Regulations may require that the material be tested to determine asbestos content.


All substrates must be dry, clean, smooth, flat, free from all existing adhesive residues, and free from movement or deflection. Important: the substrate must be level within 3/16″ in a 10-ft. radius. Grind down any high spots and fill any low spots. Fill and level all plywood seams and concrete cracks, grout lines, embossed patterns, construction joints, control joints, depressions, grooves or other irregularities. Use a latex fortified, cementitious patching compound. Sweep and/or vacuum substrate to remove all dust and debris.


The SPC is a floating floor and should not be glued or nailed to the substrate. SPC planks are intended for indoor use only. Determine in which direction the planks will be installed.

NOTE: To make the room appear larger, or if installing in very small rooms or hallways, it is preferable to lay the planks parallel to the longest room dimension. Do not install cabinets on top of Cascade SPC planks. Carefully measure the room to determine squareness and also to determine the width of the last row of planks. If the width of the last row of planks is less than 2″ (50mm), excluding the tongue, the width of first row of planks will have to be cut and adjusted accordingly. A minimum 5/16″ (8.2mm) expansion space is required around the perimeter of the room and all vertical objects. Inspect all planks for visible defects and damage before and during installation. Do not install damaged planks. We will not accept responsibility for claims on flooring installed with obvious defects. During installation, inspect the groove area of the plank and remove any debris that may prevent proper assembly of planks. A wide variation in color and texture is designed into this product to enhance its natural appearance. Pull alternate planks from a minimum of 5 boxes to blend the variations for the best natural appearance. Moldings are designed to color coordinate with the overall look of the floor. Due to the many color and texture variations designed into each plank, ‘exact matches’ are not possible. Color and texture variations between planks and moldings are not considered defective.


1. Begin laying planks from the left side of the starting wall and work to the right side. The tongue side of the plank should face the starting wall, groove side should face out.

2. Place 5/16″ (8.2mm) spacers between the short and long side of the planks and the wall. Always position one spacer between the wall and where the planks’ end joints meet.

3. The end joints of the planks in the first row are assembled by inserting the tongue side into the groove side of the previous plank at a low angle. Gradually lower the plank down flat until the end joint closes, ensuring that the planks are perfectly aligned, smooth, and level. If necessary, use a mallet and tapping block to gently tap down on the ends to firmly lock in the end joints. It is important to ensure that both the plank ends are perfectly aligned and level with each other. DO NOT strike plank directly on the surface as this can cause damage to the finish. Use the tapping block. Install remaining full planks in first row.

4. The last plank in the first row will need to be cut. Measure the distance between the wall and the surface of the last full plank. Subtract 5/16″ (8.2mm) from this measurement to allow for the spacer. If this measurement is less than 8″ (20.3cm), the length of first plank in the row must be cut. This will allow for a longer plank at the end of the row. The first and last plank in each row must be at least 8″ (20.3cm) in length. Planks can be cut using a table saw or scored and snapped using a straight edge and utility knife. Score the top surface of the plank a few times with a utility knife then snap the plank on score line. It may be necessary to then cut through the attached underlayment.

5. The remaining piece cut off from the last plank in the first row may serve as the first plank in the second row provided it is at least 8″ (20.3cm) long. Always stagger end joints from row to row a minimum of 8″ (20.3cm).

6. Install the long side of the first plank of the second row. Remember to place a 5/16″ (8.2mm) spacer between the wall and the short side of the plank. Insert the tongue side into the groove side of the previous row at a low angle and lower flat to the substrate.

7. Install the second plank in the second row. Position the long side of the plank with the tongue side overlapping the groove of the planks in the previous row approximately 1/8″.

8. Angle the end joint into the previous plank. Angle the plank up and gently push forward until the plank locks into the previous row. Continue installing remaining planks in second row. It is important to make sure that the first two rows are straight and square as they can affect the entire installation. After installing each row, use a rubber mallet and tapping block to gently tap the plank joints into the joints of the previous row to ensure a tight fit and perfect alignment between end and side joints. Any gapping or misalignment can affect the quality of the installation

9. The last board in each row should be cut to fit the end of the row, while still maintaining the 5/16″ expansion gap at the wall. Here’s how:

(1) Flip the board over (placing the groove to your left).

(2) Measure the board to the size of the gap in the row.

(3) Mark and cut the board using a miter or table saw or score and snap.

(4) Flip the board over and it will be ready to insert and be tapped into place.

(5) You may use the remaining piece to begin the next row.

10. Use a pull bar to lock in the last plank of a row and in the last row of flooring being installed in the room.

11. Continue working from left to right, row by row. Be sure to maintain a 5/16″ space around all walls and vertical objects and maintain a random appearance. Offset end joints a minimum of 8″ (20.3cm) from row to row.


This product can be installed over radiant heated subfloors. The heating elements must be embedded into the subfloor and must have a minimum 1/2” separation from the Cascade flooring. Electric heating mats not embedded into subfloor are not recommended. The radiant heated subfloor should be fully operating at normal temperature for minimum of 21 days prior to floor installation to dry out any residual moisture. The system should then be turned off 24 hours prior to installation and remain off for 24 hours after installation. After 24 hours the temperature can be gradually raised again of a 7-day period to desired temperature. The MAX allowable subfloor surface temperature over radiant heat is 85°F.


After all planks have been installed, remove spacers from perimeter of room. Install any transition moldings. Do not fasten any moldings through the flooring. Predrill and install quarter round or baseboard molding. Molding must be sufficient size to cover the 5/16″ (8.2mm) space. Do not fasten moldings through the flooring. Fasten into the wall. Use a 1/8″ Masonite sheet to cover and protect the top of the flooring when moving heavy furniture or appliances into position. Use proper floor protectors under the legs of furniture. Post installation room temperature MUST be maintained between 65º F and 100º F (flooring temperature) Relative humidity must be maintained between 40% and 70%. Place walk-off mats at all doors leading to exteriors to help prevent tracking of grit, dirt, and sand.