17/10/2026
How to waterproof a flat roof:
See below and you can also call us for advice on all types of waterproofing jobs
010 500 7557
Need a premium quality waterproofing system? Sikalastic®-560 is your solution. Sikalastic®-560 is a liquid applied, one component roof waterproofing solution. This is ready to use and is cold applied, leaving a seamless finish.
What you will need
Sikalastic®-560
Sikalastic® Fleece-120 and Sika® Reemat Premium for detail work around upstands and pipe penetrations
Large paint brush/ block brush / roller
Spatula for mixing / mechanical mixer for larger quantities
Gloves
Mask (Optional)
Product Information
Sikalastic®-560
Economical liquid applied roof waterproofing solution based on Sika Co-Elastic Technology (CET)
Sikalastic® Fleece-120
Polyester fleece reinforcement for Sikalastic® Liquid Applied Membrane systems
Step 1: Surface Preparation
- Ensure that the substrate is clean, dry and free of all contaminants and correctly prepared.
- All dust and loose, friable material must be removed.
- Blow holes and voids should be fully exposed then repaired.
- Should the substrate be poor or porous, priming of the substrate would be required.
- Dilute Sikalastic®-560 with 10% water and apply as primer.
- Clean substrate before applying Sikalastic-560
Step 2: Apply Bottom Coat
- Apply Sikalastic-560 primer coat
- Thoroughly mix the product for 1 minute before applying the primer coat if needed.
- Once the primer has dried, apply the first coat of Sikalastic®-560.
Step 3: Place Sikalastic® Fleece-120 Membrane
- Roll in the Sikalastic® Fleece-120 while the bottom coat is still wet and ensure that there are no bubbles or creases.
- Overlapping of the fleece must be a minimum of 5 cm.
- Laying Sikalastic Fleece-120 membrane
Step 4: Top Coat
- Final coat of Sikalastic-560
- Once the base coat has dried, Sikalastic®-560 can be applied in 1-3 coats depending on service life expectations, allowing each coat to dry before applying the subsequent coat.
TOP TIP
FOR DETAILING AREAS:
For complex and detailed roofs the Sika® Reemat Premium should be used.
