Facade Sealing in Crabtree
Facade joint and window perimeter sealing on commercial buildings in Crabtree and across West Sussex. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Weathered facade joints that have lost their grip
- Draughts around frames and panels
- Previous reseals run over old sealant
Facade sealing in Crabtree
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
What we are called out for in Crabtree
Not every failure is in the sealant: if the edge of the render, concrete or coating breaks away, the bead goes with it. We tell you when the edges need repairing before resealing.
Most enquiries start with one or more of the following:
- Staining on stone next to old sealant
- Cladding panel joints that have opened up
- Patch repairs that keep failing
- Cold air coming in at window perimeters
For a contractor working at a hospital such as Horsham Hospital, 4.9 miles to the north-west of Crabtree, perimeter and facade sealing is planned around patients and deliveries.
Before you book anyone
- Is the sealant right for the movement and the substrate?
- Will RAMS and insurance details be available?
- The terms of the workmanship guarantee
- Will failed sealant be removed rather than covered?
About our facade sealing in Crabtree
We are often asked to look at water coming in around frames. Failed perimeter sealant is a frequent cause, but not always. If the evidence points away from the sealant, we say so before quoting. The enquiries we see most involve leaks at window and door perimeters and sealant pulling away from frames or panels, on coping and flashing joints, stone and brick facade joints and cladding panel joints. Most enquiries from Crabtree start with one failed joint and grow into a wider look at the building: we look at the rest while we’re there and tell you what we find.
Around smaller places like Crabtree, building work normally means conversions of farm buildings, a few new houses or an extension to a hall or school. Perimeters, facade joints and internal sealant all need doing properly, however small the scheme.
The 12-month guarantee is for workmanship rather than wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we are clear about what is covered before work starts.
- Place
- Crabtree (RH13)
- Wider area
- West Sussex
- Guarantee
- A 12-month guarantee
- Price
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Surface by surface
Window and door perimeters
Aluminium, PVC-U and timber frames each have their own preparation needs. Primer goes on where the manufacturer specifies it for that substrate.
Render and coated surfaces
Rendered and painted facades need a sound edge for the sealant to bond to. Loose coatings are cleaned back first.
Owners, agents and contractors
CHAS accredited and a Constructionline member, we make supplier vetting simple. We’re fully insured, and our insurance certificate can go with the quote.
Agents, factors and owners’ representatives all follow the same route: send details, get a fixed quote, we seal, guaranteed. We can agree access arrangements and keyholder contacts beforehand.
Our process
Tell us your site hours and access windows and we’ll plan around them. While we are working, the area stays contained and tidy, and we check in with your contact before moving on to each new area. Jobs in and around smaller places like Crabtree are normally planned as a single visit, so photos and measurements up front really help. That way the right products come on the day.
- Photos, drawings or a visit tell us about the joints and the access.
- We confirm the joint type, movement and the specified product.
- The existing bead comes out in full and both faces cleaned back.
- Primer goes on where the product data asks for it.
- Backing rod is fitted and the new sealant gunned in and tooled.
- The finished joints are checked with you.
Before we start on site
- Agree which areas must stay open
- For older buildings, check the asbestos register before work
- Arrange parking or a loading space
Request a quote
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to call the office on 01277 525 020 or email us with what you know.
Related advice
Facades, frames and programmes in Crabtree
Crabtree lies roughly 34 miles out from central London. Building activity in the commuter belt runs from new flats near stations to business park refurbishments, which keeps mastic packages in demand. The South East is one of the drier parts of the UK. Still, external mastic needs dry faces within the maker’s temperature limits, which isn’t every day, which is why external dates are agreed with the site manager.
For a contractor at a hotel such as South Lodge Hotel, under half a mile north-west of Crabtree, the mastic often has to be finished before a reopening date. Older buildings in the area around Crabtree, such as Tyes Place, 4.3 miles north-east of Crabtree, need care when sealed: the product has to suit soft or historic materials.
Crabtree is about 5 miles south-east of Horsham, in West Sussex. Looking for facade sealing in Crabtree? We can help. Across West Sussex, 373 places are covered, Crabtree among them. Our Brighton page has more on work in that area.
We take on facade joints across the RH13 postcode area. Among the streets we cover are Mill Lane, Peppersgate and Long Hill, and sites on any of them can send details for a fixed quote. Just outside Crabtree, we also work in Lower Beeding (1 mile north), Colwood (1 mile south-east), Monk's Gate (2 miles north-west), Plummers Plain (2 miles north-east) and Mannings Heath (2 miles north-west). A short drive away, we cover Crawley (7 miles north-east), Horsham (5 miles north-west), Worthing (14 miles south-west), Haywards Heath (7 miles east), Burgess Hill (7 miles south-east) and East Grinstead (13 miles north-east).
What’s near Crabtree
Around Crabtree, our work takes us to commercial buildings near Leonardslee, among other places. The nearest railway station is Horsham station, roughly 4.6 miles north-west of the centre. Well-known places in the area include Horsham Hospital (4.9 miles north-west). Green spaces nearby include Knepp Wildland.
General trades versus a specialist
General builders and handymen seal joints, but it isn’t their main trade. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint.
There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and our CSCS-carded applicators are used to working under those rules.
After the work
After handover, these steps help:
- Keep the sealant details on the building file
- Avoid harsh cleaners on facade sealant
- Investigate damp beside windows promptly
- Ask about asbestos in pre-2000 mastic
Following storms, look inside for damp or staining near frames. Catching a new leak early keeps the repair small.
Check older buildings for asbestos before disturbing old mastic. Older sealants can contain asbestos, and work stops until it’s tested if it’s suspected.
More services for Crabtree
Crabtree: questions and answers
Can you take on a job at a hospital such as Horsham Hospital?
Yes, hospitals are one of the sectors we cover. Work is phased so departments keep running, under the site’s own rules.
Is a smaller place like Crabtree outside your area?
No. Places such as Crabtree are covered as much as the big towns. We work across Greater London and the South East. Good photographs up front let us bring everything on the first visit.
Which sealant will you use?
The specification comes first, if there is one. If there isn’t one, it comes down to the joint: its movement, its surfaces and what it has to cope with.
When can you be on site?
Mention the site’s hours and access windows in your enquiry, and we’ll schedule the work to suit. You can reach the office between 8am and 5pm, Monday to Friday.
How long does a job like this take?
That varies with the scale of the job, though a typical visit usually takes longer on a full elevation than on a handful of window perimeters, and it always depends on dry weather. For bigger or phased jobs, we’ll set out a timescale with the quote.
Can the building stay open while you work?
Yes, with some planning. We agree a sequence with your contact so just one area at a time is disrupted.
Are you fully insured?
Yes. Mastic Doctor is fully insured, public liability included.