TECHNICAL
Rebound Plaster
General Information
Rebound is a high performance, white façade system. It is manufactured from white cement, alkali resistant glass fibres and carefully selected aggregates.
It is suitable for use in public places especially where resistance to high impact is a primary requirement, for example in squash court walls. It is suitable for use on high impact surfaces and meets the specifications of the World Squash Federation. Its high density provides superior durability and resistance to air-borne pollutants.The glass fibre reinforcement ensures a high density and excellent flexural/tensile ratio (40 N/SqM) and compressive strength (40 N/SqM). This results in superior resistance to cracking, rain penetration and abrasion. Its high performance and resistance to shrinkage cracking mean that Rebound can be applied to a solid backing as a one coat system in all exposure zones.Rebound is manufactured to ISO: 9001 and ISO: 14001 standards.
The through coloured white finish of Rebound requires little or no maintenance. This can result in lower whole life costs compared with white painted renders.
Rebound is supplied pre-mixed and only requires the addition of a mixture of clean water and bonding agent
Thickness or Rendered Coat
The recommended nominal overall thickness for one coat of Rebound is 6-8mm.
The choice of backing coat is dependent on the surface to which it is applied.
Rebound is generally applied as a monolithic system
Specification Clauses
a) Location
As shown in architects drawing.
b) Background
The structure will normally be based on concrete block work or brickwork of clay, concrete or calcium silicate. Soffits will normally be dense concrete or suspended. Other backgrounds may be specified at the Architect’s discretion.
c) Preparation
Remove all loose dust and other surface contaminants. All paint work must be removed using grit blasting or needle gun attrition.
All mortar joints should be raked lightly to provide a key.
Where necessary consolidate and seal using Rebound Bonding Agent
d) Application
Apply Rebound Bonding Agent slurry coat in accordance with the manufacturers written instructions before coating. Backing coat: post dubbing out the render may be coated within 2 hours at normal ambient temperature.
Rebound should not be applied if the air or background temperatures are at or below 5ºC or above 25ºC.
Apply each coating firmly to achieve good adhesion and in one continuous operation between angles and joints.
A suitable mask must be worn during the mixing process.
Ensure all coatings are not less than the specified thickness and are of even and consistent appearance, free from rippling hollows and ridges.
The maximum dimension in any direction between joints should not exceed 7 meters.
Finishing coats must be ruled and finished as described in NBS M20.
Information sources
BS/EN 5262 Code of practice for external rendering
BS/EN 5492 Code of practice for internal plastering
www.squash.org
