Exterior Render Repair Systems
Render Repairs for Cracked and Leaky Substrates
Overview
Researching the vigorous demands of remedial works, Sto's technical staff have developed the StoArmat reinforcement plaster and incorporated it into the exterior facade system by pursuing innovative technology to meet ecologically acceptable standards. Using this approach Sto has also developed a comprehensive range of finishing renders and solutions to enable the specifiers to select an individual solution to meet the project requirements.
Supplying the industry with quality render and coating products demands technological expertise, quality materials and precise documentation for customer confidence and longevity. Sto has developed the malleable high impact weatherproof StoArmat Render System to repair, refurbish and maintain render surfaces. Packaged in Germany to guarantee quality the Sto range of render and coating systems exceeds expectations.
StoArmat Remedial Render System
10 Year Warranty
The StoArmat Remedial render system is a well engineered solution providing a ten year warranty for render Repair and crack addressment. It incorporates StoLastic Fill an elastomeric jointing paste and StoLastic Mesh RF with high crack prevention properties to provide reinforcement and flexibility. Once dry a full StoArmat meshed reinforcement render plus sto mesh, providing reinforcement, strength and durability. Finished in Stolit K finishing render and Sto Coating of your choice.
StoArmat Remedial render system
Click on each of the layers below to view the components of the system.
01
Timber Frame
Check timber to ensure the framing is sound (to be carried out by an indepdendent assssor)
02
Substrate: Fibre Cement type cladding
Substrates as Polystyrene, Concrete Block, EPS Block, Brick or Stucco are also possible.
03
Crack treatment:
StoCrack Filler Fine
European manufactured and certified, filled, cold elastic paste to fill and reinforce cracks.
Plus: StoLastic Mesh RF
Specially engineered elastic reinforcement mesh with high tear resistance.
04
StoArmat Classic: Reinforcement Render
European manufactured. High flexibility, crack resistance of six times higher then that of cement based products plus durability against mechanical stress ensure the highest system reliability render available. (contains no cement)

05
Plus: Sto European mesh 4/7mm
Easy to install, meets the highest requirements for crack, stress and alkalinity resistance.

06
Finishing Render: Stolit range
European manufactured and certified, organically bound, strong, hard wearing, impact resistant, pre coloured finishing renders. (No cement)
Stolit K - (1mm/1.5mm /2mm/3mm) coloured finishing render. A range of coloured float finished self gauging granulated finishes.
Stolit MP & MP Natural - coloured finishing render. A range of coloured fine sponge finishes.

07
Coating:
StoColor Lotusan - matt mineral resin self cleaning paint with lotus effect.
StoColor X-black - matt finish, removes virtually all thermal considerations when choosing colour.
StoColor Maxicryl - matt facade paint, for a natural look.
10 Year StoWarranty with StoService Assurance
Finishes
Stolit: Coloured Finishing Renders
Stolit organic finishing renders are manufactured in Europe and certified around the world. They have been in successful use for over 50 years on a variety of different substrates. During this time they have undergone a continual process of optimisation.
The perfect combination of properties: Durable, strong, hardwearing, impact resistant, malleable, weather resistant, colour stable and highly resistant to micro-organism. They are designed with good vapour permeability to allow the building to breathe while still repelling liquid water. All renders are easy to apply and can be tinted from the StoColor System or matched to the colour of your choice, using the Sto spectrometer.
Coloured self-gauging float finish renders: |
|||
![]() |
![]() |
![]() |
![]() |
StolitK 1.0mm |
StolitK 1.5mm |
StolitK 2.0mm |
StolitK 3.0mm |
Coloured fine float, sponge, or light adobe finish renders: |
|||
![]() |
![]() |
![]() |
|
Stolit MP |
Stolit MP Natural |
Stolit Milano |
Facade Paints
There are a total of 800 colour shades available for trending colour concepts. The special feature is the StoColor System eschewing stringent colorimetric logic in favour of the human perception of colour. StoColor System's gaurantee a high degree of functionality – designed in line with the aesthetic colour requirements in construction.
Product |
StoColor Lotusan |
StoColor X-black |
StoColor Maxicryl
|
StoArmat Remedial System Complete Detail Set
StoArmat Remedial System Individual Detail Set
Click here to hide details.
Disclaimer: These drawings have been issued as a guideline. The sequence work covers various building components, each trade is responsible to ensure their elements are fully installed, including all waterproofing / sealant / flashings as is applicable.
Last updated June 2024








