ACE London Roofing provides expert external rendering services across Central London. Whether your render is cracking, blown, damp-stained or simply tired-looking, our skilled team delivers a flawless finish that protects your property from the elements and dramatically improves its appearance. From traditional sand and cement to modern monocouche and silicone systems, we match the right render to every property.
Rendering Services We Offer
We carry out all types of external rendering across Central London — from small repair patches to full whole-house re-renders on period and modern properties alike.
🏠
Sand & Cement Rendering
Traditional two-coat system
🎨
Monocouche Rendering
Single coat, through colour
💧
Silicone Render
Self-cleaning, flexible finish
🔧
Render Crack Repair
Hairline to structural cracks
🪣
Blown Render Removal
Hack off & re-render
🧱
Tyrolean & Pebbledash
Match or replace texture
🏗️
Parapet & Gable Rendering
High-level render work
🛡️
Waterproof Render Coating
Penetrating damp prevention
Why Render Fails & How We Fix It
Render failure in Central London is extremely common — particularly on Victorian and Edwardian properties where original sand and cement render has been subject to decades of thermal movement, freeze-thaw cycles and pollution. The most frequent causes of failure are the use of render that is too hard for the underlying masonry, inadequate key preparation, or render applied directly over damp brickwork. Once render cracks or blows, water penetrates behind the surface, saturating the masonry and causing the very damp problems it was intended to prevent.
Our team correctly diagnoses the cause of render failure before any remediation work begins. There is no point applying new render over a damp or unstable substrate — we identify and resolve the underlying cause first, ensuring your new render performs as intended for 20+ years.
Our Rendering Process
1
Free Survey & Diagnosis
We carry out a thorough survey of your existing render — identifying blown areas, cracks, damp penetration and substrate condition. We diagnose the cause of any failure before recommending a solution.
2
System Specification & Quote
We specify the appropriate render system for your property type, substrate and aesthetic requirements — and provide a fully itemised written quote with no hidden costs.
3
Surface Preparation
Blown, failed and unstable render is hacked off. The substrate is cleaned, treated for damp where required, and prepared with the correct bonding agent or scratch coat to ensure maximum adhesion.
4
Render Application
New render is applied in the correct number of coats to the specified thickness — floated, ruled and finished to the agreed texture. All beads, reveals and movement joints are correctly detailed.
5
Final Inspection & Guarantee
Completed render is inspected for consistency, coverage and finish quality. Full workmanship guarantee issued. Your property is left clean and protected.
Recent Rendering Projects
Full Re-Render — Islington
Monocouche — Westminster
Crack Repair — Hackney
Frequently Asked Questions
What is the best type of render for a London property?+
It depends on the substrate and the property. For most Central London Victorian and Edwardian brick properties, a traditional sand and cement render using a weaker mix than the brickwork is appropriate. Monocouche offers a through-coloured, textured finish with no painting required. Silicone render is the most flexible, breathable and self-cleaning option — ideal for properties with a history of damp. We specify the right system during your free survey.
How long does external render last?+
A correctly specified and applied sand and cement render should last 20–30 years. Monocouche and silicone systems typically carry manufacturer warranties of 20–25 years. The key factors in longevity are correct substrate preparation, appropriate mix design for the substrate, and ensuring any underlying damp or movement issues are resolved before rendering begins.
Do I need planning permission to render my house in Central London?+
In most cases, rendering a property is covered by permitted development rights. However, properties in conservation areas — of which there are many throughout Central London — may require planning permission, particularly if the change would affect the character of the area. Listed buildings always require listed building consent. We advise on planning requirements during your free survey.
How much does external rendering cost in London?+
Render repair patches start from around £200–£500. A full re-render for a typical Central London terraced house ranges from £2,500 to £6,000+ depending on the size, height, access requirements and render system chosen. Monocouche and silicone systems cost more than sand and cement but offer a longer-lasting, lower-maintenance finish. We provide detailed written quotes for accurate comparison.
Can you render over existing render?+
In some cases, yes — if the existing render is sound, well-bonded and correctly keyed. However, if there are blown areas, cracks, damp penetration or the existing render is too thick, it must be removed first. We always carry out a thorough tap test and assessment before advising on the correct approach. Rendering over failed render simply delays and compounds the problem.