In short
- Multi-unit and commercial rendering needs a written specification, method statements and a programme, not just a price per m².
- On residential buildings over 18 m, combustible materials are banned in external walls; buildings over 11 m carry further guidance in Approved Document B.
- Leasehold blocks usually need Section 20 consultation before major works are charged to leaseholders.
- Developers need colour and finish consistency across phases and plots, and warranties that satisfy the build warranty provider.
Who this is for
- Managing agents and residents' management companies re-rendering blocks.
- Landlords upgrading rental homes, including with external wall insulation towards EPC targets.
- Developers and builders needing a rendering subcontractor for new plots and extensions.
- Schools, surgeries, offices and retail units needing facade refurbishment.
Fire safety comes first on taller buildings
Since 2018, Building Regulations have banned combustible materials in the external walls of relevant buildings over 18 metres containing flats and certain other uses. Approved Document B also carries guidance on external walls of residential buildings between 11 and 18 metres. Any rendered EWI system on these buildings must be specified by a competent designer, with the insulation, render and fixings chosen to meet the requirements. A price-per-metre quote is not a specification.
Leasehold blocks and Section 20
Where leaseholders will contribute more than a set amount each, landlords must consult them under Section 20 of the Landlord and Tenant Act 1985 before major works. That affects timing: build consultation periods into your programme and get comparable quotes on the same specification.
Landlords and energy targets
The Warm Homes Plan sets out a minimum EPC C standard for privately rented homes by 1 October 2030, with a cost cap per property. External wall insulation can be one of the larger improvements for solid-walled rental homes. See external wall insulation and the grants guide.
What we need to quote
- Address and number of units or elevations.
- Current wall construction and finish, if known.
- Building height and number of storeys.
- Any existing survey, specification or drawings.
- Programme constraints, occupied or vacant, and access limits.
Questions people ask
Can you handle a whole estate or portfolio?
Yes. We can programme several properties or blocks in sequence, so scaffold, materials and crews move efficiently from one to the next.
Do you provide specifications?
For houses and low-rise buildings we specify the system after survey. For taller or complex buildings a designer, surveyor or the system manufacturer should produce the specification.
Can render be matched across new-build phases?
Colour consistency across batches is a real issue. Order from the same batch where possible, finish whole elevations in one go, and agree a reference sample panel.