Furnace Green construction mastic
Work needed on a mastic package in Furnace Green? We look at it, seal it with the right product and hand it over with a 12-month guarantee.
- Oversized or tapered gaps around new frames
- New external sealant already peeling away
- Existing joints on a refurb that need cutting out and resealing
Construction mastic near Furnace Green
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
What we’re called out for in Furnace Green
Frames installed with uneven gaps make perimeter sealing harder. Sealant has a range of joint widths it can cope with and gaps beyond it need packing or adjusting by the frame installer. We flag them early rather than filling them with sealant that won’t last.
What tends to prompt an enquiry:
- Old sealant on a refurbishment that needs stripping before new work
- Different trades sealing to different standards
- Perimeter gaps outside the sealant’s range
- Mastic snags holding up handover
Hotel extensions and refits, at places such as Europa Gatwick Hotel, which lies north-east of Furnace Green, typically run between busy periods, so the sealing is squeezed into short windows.
Questions to ask before you book
- How they handle RAMS and site documents
- Who will actually carry out the work
- How the existing material will be dealt with
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
Construction mastic in Furnace Green, done properly
Refurbishment work needs a slightly different approach from new build. Old beads come out completely, as fresh silicone can’t grip old and the asbestos survey is checked first on older stock. New and existing joints then get the same preparation. If you are dealing with external joints sealed in damp or cold conditions that are now failing and mastic snags holding up handover, we can put it right, whatever the surface. One point of contact handles commercial sealant work in Furnace Green from the first photographs to the final walk-round, whether it’s one building or several.
Conversions around smaller places like Furnace Green often join new frames to old masonry or timber, which leaves joints between old walls and new frames that need a sealant able to take the movement, in a colour the planners or architect are happy with.
A 12-month guarantee applies to all our work. Should something we installed fail, phone 01277 525 020 or send details through our quote form and we will come back to it.
- Where
- Furnace Green (RH10)
- Region
- West Sussex
- Guarantee
- A 12-month guarantee
- Quotes
- A fixed quote before we start
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Doing it in-house
Using site staff can make sense for a small touch-up, but anything bigger is another matter: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.
A short, simple internal joint is often within reach of a maintenance team. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
Looking after the joints
Your facilities or cleaning team can help the joints last. Pass these on to them:
- Ask for joint and product checks before the package is urgent
- Check frame gaps are within the sealant’s range before sealing
- Protect sealed areas from following trades
- Allow flexibility for external sealing in damp or cold weather
If a joint is damaged after sealing, flag it early. We can return to clear snags before handover.
In wet areas, a weak sanitary joint shows up quickly once the building is occupied. Water gets behind trays, vanity tops and panels. Getting the product and preparation right first time avoids that.
How the job changes by surface
Window and door perimeters
Gaps around frames have to be within the sealant’s range. Gaps outside the product’s range are raised with the site team before sealing starts.
External facade and movement joints
External movement joints often need primer, depending on the substrate. We prime where the manufacturer specifies and work only when conditions suit.
Furnace Green: questions and answers
Could you schedule work at a campus like Crawley College for the vacation?
Yes. Education sites normally want the work in vacations or in phases during term, and we plan to suit. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.
Is Maidenbower Business Park, near Furnace Green, within your area?
Yes. Estates, retail parks and business parks around Furnace Green, Maidenbower Business Park among them, are all within reach. Photos and a short description are enough for a first look.
Is colour matching possible?
It depends on the product specified. Some ranges offer many colours, others very few, so we’ll confirm the colours available for the specified product with the quote.
Do you seal on top of existing sealant?
No, never. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.
When is resealing likely to be due?
There isn’t a single answer, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular checks let you plan resealing before leaks or damage.
How do you choose the sealant?
If the job is specified, we follow the specification. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.
How long does a typical visit take?
The duration is planned around your programme and the access we’re given. You’ll have an expected duration with the quote.
How a job runs
On arrival, we sign in, go through any site induction and check how permits are handled. Everything around the joints gets protected before any cutting starts, and the work typically takes a few days on a modest refurbishment and longer on multi-plot or multi-storey schemes. Work in places the size of Furnace Green is planned as a single visit where we can. Photos with rough sizes let us arrive with everything needed.
- First we take quantities off the drawings and read through the specification.
- A fixed quote sets out the scope, the products and the sequence.
- You tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we confirm it with the quote.
- Work follows the programme, area by area, as rooms and elevations become ready.
- Joints are cleaned, primed where the maker requires it, backed and sealed to the specification.
- We close out snagging and hand over with a 12-month guarantee.
Before we start on site
- Point out any areas we must not close
- For older buildings, check the asbestos register before work
- Warn occupants and staff about the work
Ask for a quote
For a fixed quote, give us a call on 01277 525 020 or email us. Our quote form is another easy route.
Advice
How the quote is worked out
Before we quote, we look at:
- The product specified
- How accessible the joints are
- Site requirements such as inductions and permits
- Distance, for remote addresses
Every site prices differently: the joint sizes, the specified product, access and working hours each have a bearing. Send the details and a fixed figure follows.
Sending details for a quote
To price the job accurately, we need to understand the site. Useful things to include:
- The product your specification calls for
- Asbestos survey details if the building is older
- Any dates the work must fit around
- Clear photos of the problem areas
We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To start the process, phone 01277 525 020 or email drawings and photos.
New build and refits around Furnace Green
Furnace Green is in the South East, one of the UK’s drier regions. That doesn’t stop wet spells, or frosty starts that leave panels too damp to seal, which is why external dates are agreed with the site manager. Furnace Green sits in or beside Crawley, a twentieth-century planned town. Many of its original buildings are reaching the age for recladding and new windows, with mastic packages to match.
When units on a site such as Maidenbower Business Park, 0.9 miles to the north-east of Furnace Green, are refurbished or reclad, the panel joints and window perimeters are part of the mastic package. Projects at colleges like Crawley College, 1.5 miles north-west of Furnace Green, tend to run to term dates, so the mastic is planned tightly.
Furnace Green is about 2 miles south-east of Crawley, in West Sussex. We cover commercial sites throughout Furnace Green. Furnace Green is one of 373 places we cover in West Sussex. We also cover Brighton, around 18 miles from Furnace Green.
Business premises anywhere in RH10 are within our area for mastic packages. If your site is on Marion Road, Holder Road and Bolton Road or close by, we can quote for mastic packages. Close to Furnace Green, our area also takes in Pease Pottage (2 miles south-west), Worth Abbey (2 miles east), Balcombe Lane (2 miles south-east), Balcombe (3 miles south-east) and Staplefield (4 miles south). Nearby towns on our patch include Horsham (7 miles west), Haywards Heath (7 miles south), Burgess Hill (10 miles south), East Grinstead (7 miles east), Billingshurst (14 miles south-west) and Bewbush (3 miles west).
What’s near Furnace Green
Locally, jobs take us to sites close to Oriel High School, The Charcoal Burner pub and Tilgate Park and the streets around them. The nearest railway station is Three Bridges station, roughly 1.2 miles north of the centre. Other landmarks nearby include Crawley Museum (1.8 miles north-west) and Crawley Hospital (2 miles north-west). For a walk, there’s Tilgate Lake.