Rendering Companies in Brighton
Safe-Bricks provides rendering and external wall repair services across Brighton and Hove, with particular expertise in lime render, bungaroosh and traditional solid-wall construction.
The correct render system depends on the wall beneath it. Before specifying a replacement finish, we consider the construction, existing materials, exposure, condition of the masonry and any active sources of moisture.
For older Brighton properties, this is especially important. A render system that performs well on modern blockwork may not necessarily be appropriate for a traditional wall built from bungaroosh, flint, soft brick or lime-mortared masonry.
External Rendering in Brighton and Hove
Our rendering work can include:
- Removal of failed or defective render
- Local masonry repairs
- Bungaroosh repairs
- Preparation of traditional solid walls
- Lime rendering
- Repair of existing lime render
- Appropriate reinforcement at vulnerable areas
- Render repairs around windows and openings
- External finishing and decoration
- Making good following structural or masonry repairs
We assess the existing wall before deciding whether full removal, local repair or overcoating is appropriate.
Lime Rendering
Lime render is commonly used on traditional solid-wall buildings because it can provide a compatible external finish while allowing moisture within the wall to disperse through evaporation more readily than many dense modern systems.
This does not mean that lime render is automatically the correct choice for every property.
The specification should consider:
- Existing wall construction
- Type of masonry
- Condition of the substrate
- Exposure to wind-driven rain
- Existing internal finishes
- Previous repairs
- Detailing around openings
- Roof and rainwater goods
- Ground levels
- Decorative finish
Where lime is appropriate, the render build-up is selected to suit the individual wall rather than applied as a generic specification.
Rendering Bungaroosh Walls
Bungaroosh requires particular care.
Unlike uniform modern masonry, bungaroosh can contain a mixture of materials including lime, flint, brick fragments and other local aggregates.
The surface condition can vary considerably even across a single elevation.
Where defective render is removed, the exposed wall may require:
- Loose material to be carefully removed
- Voids to be repaired
- Defective sections to be rebuilt
- Open joints to be consolidated
- Localised masonry repairs
- Appropriate preparation before rendering
Applying a new render directly over an unstable background will not correct the underlying defect.
The masonry must be capable of supporting the new system first.
Lime Render Versus Cement Render
The choice between lime and cement-based systems should be based on the building rather than a blanket rule.
Cement renders can be appropriate in many forms of modern construction.
However, a hard, dense render applied to some traditional solid walls can behave very differently from the original materials, particularly where the masonry is soft, irregular or designed around lime mortar.
Potential problems can arise where the external finish is substantially less permeable or more rigid than the substrate beneath it.
These can include:
- Localised moisture accumulation
- Deterioration of softer masonry
- Cracking at interfaces
- Loss of adhesion
- Accelerated failure around defects
- Damage when excessively hard render is later removed
This does not mean that cement render always causes damp or that every traditional building must be stripped back automatically.
The existing wall and its condition should be assessed before any major removal is specified.
Failed and Cracked Render
Cracked or hollow render can result from a number of different causes.
These may include:
- Loss of bond
- Building movement
- Poor substrate preparation
- Water penetration
- Inadequate detailing
- Incompatible materials
- Corroding metalwork
- Thermal movement
- Previous patch repairs
- Structural defects
The visible crack is therefore not always the full problem.
Before repairing extensive cracking, we look at the pattern, location and condition of the surrounding wall.
Where cracking may indicate structural movement, this should be investigated before cosmetic repairs are undertaken.
Damp Behind External Render
Damp staining internally is sometimes blamed immediately on the render.
In practice, external moisture problems can have several causes.
These include:
- Cracked render
- Defective gutters
- Leaking downpipes
- Roof defects
- Failed flashings
- Poor detailing around windows
- High ground levels
- Plumbing leaks
- Defective pointing
- Condensation internally
- Previous incompatible repairs
A moisture-meter reading alone cannot determine which of these is responsible.
Our normal approach is to identify the wall construction, inspect likely moisture sources and repair active defects before deciding whether the render itself needs to be removed or replaced.
Removing Existing Render
Existing render should not be removed unnecessarily.
Where it remains well bonded, compatible and serviceable, local repair may be more appropriate than complete replacement.
Full removal may be justified where the render is:
- Extensively detached
- Severely cracked
- Failing across large areas
- Incompatible with the underlying wall
- Concealing significant masonry defects
- Preventing necessary structural repairs
- Part of a wider traditional wall restoration
On older masonry, removal must be carried out carefully.
Very hard render can sometimes be stronger than the bricks, bungaroosh or mortar beneath it. Aggressive mechanical removal can therefore damage the original wall.
The method of removal should reflect the condition and strength of the substrate.
Repairing the Wall Before Rendering
Render should not be relied upon to hold together defective masonry.
Where necessary, repairs are completed before the new render system is installed.
This can include:
- Repointing
- Local brick replacement
- Bungaroosh consolidation
- Rebuilding defective sections
- Repairing cracks
- Making good around openings
- Removing unstable material
- Correcting previous unsuitable repairs
The objective is to provide a sound and appropriately prepared background for the render.
Traditional Multi-Coat Render Systems
Traditional lime render is typically built up in multiple coats.
Depending on the wall and selected system, this may involve:
- 1Preparing and repairing the masonry
- 2Applying the initial coat
- 3Building the required thickness through subsequent coats
- 4Allowing appropriate curing between stages
- 5Applying the finishing coat
- 6Allowing the completed render to dry appropriately
- 7Applying a compatible decorative finish where specified
Exact coat numbers, thicknesses and mixes depend on the substrate and product specification.
We do not treat one standard render build-up as suitable for every building.
Render Around Windows, Doors and Junctions
Many render failures begin around openings and changes in material.
Particular attention may be required around:
- Window reveals
- Door openings
- Sills
- Lintels
- Roof abutments
- Parapets
- Extensions
- Pipe penetrations
- Junctions between different wall types
Good detailing is as important as the render material itself.
Where water is being directed behind the render by a failed sill, flashing or gutter, replacing the render without addressing that defect may only lead to repeated failure.
Coastal Exposure in Brighton
Buildings in Brighton and Hove can experience substantial exposure to wind-driven rain and coastal weather.
Elevations close to the seafront or in particularly exposed positions may require greater consideration of:
- Rain exposure
- Render thickness
- Surface detailing
- Drips and projections
- Cracking
- Maintenance
- Decorative coatings
A vapour-permeable system still needs to provide appropriate protection from external weather.
Material compatibility does not mean leaving a wall inadequately protected against rain.
Rendering Modern Construction
Not every Safe-Bricks rendering project involves traditional masonry.
We can also undertake suitable rendering work on modern extensions and other appropriate substrates.
The system is selected according to the construction and specification of the building.
This may differ substantially from the lime-based approach used on older solid walls.
Rendering as Part of a Wider Repair
Rendering is often only one part of an external wall project.
Safe-Bricks can coordinate associated work including:
- Bungaroosh repairs
- Brick and masonry repairs
- Traditional pointing
- External decorating
- Internal plaster repairs
- Lime plastering
- Moisture investigation
- Structural repairs
- Renovation work
This allows the underlying defect, masonry repair and final finish to be considered together.
Heritage and Conservation Considerations
Some Brighton and Hove properties are listed or located within conservation areas.
External changes to materials, appearance, colour, texture or detailing may require additional consideration and, in some cases, consent.
Where this applies, the required permissions should be established before significant alterations to the elevation are undertaken.
Choosing a Rendering Company in Brighton
When comparing rendering companies, the quoted render product should not be the only consideration.
For an older building, useful questions include:
- Has the existing wall construction been identified?
- Has the condition of the masonry been assessed?
- Have active moisture defects been investigated?
- Is removal of the existing render actually necessary?
- Is the proposed render compatible with the substrate?
- How will windows, sills and junctions be detailed?
- What happens if defective masonry is exposed?
- What decorative finish will be used afterwards?
The specification should follow the building, not the other way around.
Rendering Services in Brighton and Hove
If your external render is cracked, hollow, failing or you are unsure whether the existing system is appropriate for the property, send Safe-Bricks photographs for an initial review.
Useful photographs include:
- The complete elevation
- Close-ups of cracks or failed areas
- Windows, sills and openings
- Gutters and downpipes
- Ground level at the base of the wall
- Any exposed masonry
- Corresponding internal areas where damp is present
Photographs can help us understand the likely construction and condition, but significant defects may require an inspection before a repair specification is confirmed.
Not sure where to start?
Send us photographs of the area of concern. It is the most straightforward first step — we will look at what you can see and advise on the appropriate next steps.