Whitehall mastic sealing
Mastic sealing for building owners, managing agents and housing associations across Whitehall, by CSCS-carded applicators. CHAS accredited and fully insured.
- Worn sealant at communal door frames
- Window mastic that has split and shrunk
- Open joints in brickwork or panels
Mastic sealing near Whitehall
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
How we handle mastic sealing in Whitehall
Before work starts, most agents and landlords want the documents in order. For documents, tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote. We’re a Constructionline member and CHAS accredited, and we carry public liability insurance. Most enquiries involve repeated reactive repairs to the same buildings and movement joints with sealant missing, on external wall and movement joints, balcony and threshold joints and communal kitchens and washrooms. Searching for sealant specialists in Whitehall? We have been sealing commercial buildings since 2005.
For owners with a single building near Whitehall, we plan to finish in one visit where possible. Photos of each elevation help us quote accurately.
Work we carry out in West Sussex comes with a 12-month guarantee. Should something we installed fail, call the office on 01277 525 020 or use the quote form and we’ll come back to it.
- Place
- Whitehall (RH13)
- Region
- West Sussex
- Guarantee
- 12 months on every job
- Price
- A fixed quote before we start
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
Your questions answered
Do you work for managing agents with blocks near Billingshurst station?
Yes. Managing agents, landlords, property factors and housing associations are who this service is for. Send the address, photographs of the elevations and your access arrangements, and we will give a fixed quote.
Is Whitehall too far out for you?
No. Small places get the same service as large ones. We work across Greater London and the South East. Send photographs and a list of what needs doing, and we will plan the job to need as few trips as possible.
How many days will you need on site?
We plan the time on site around your programme and access. We’ll give you an estimate of time on site when we quote.
What if the old mastic contains asbestos?
In older buildings, old mastic can contain asbestos. We check the asbestos register or survey before disturbing it and suspect material is tested first.
Do you work to architects’ specifications?
Yes. The specification and the manufacturer’s installation guidance are what we work to, and any queries are raised before we start.
What about access for upper-floor joints?
Every block is different. How upper joints are reached is agreed before work is booked so there are no surprises.
How do you choose the sealant?
The specification comes first, if there is one. Without one, the joint decides: its movement, its surfaces and what it has to cope with.
For owners and agents in Whitehall
At about 38 miles from central London, Whitehall is within reach of the capital. Around the capital’s commuter belt, managing agents look after many blocks close to stations and town centres, and window and balcony mastic on them tends to age at the same rate. Whitehall is in the South East, one of the UK’s drier regions. External mastic still waits for dry faces and the right temperature, and the sunniest, most exposed sides of a building typically need attention first.
For agents with blocks near Billingshurst station, 3.8 miles to the north-west of Whitehall, a block-wide mastic programme deals with frames, balconies and entrances in one go. Site managers at schools like Shipley CofE Primary School can fit frame mastic into the summer works.
Whitehall is about 6 miles south-west of Horsham, in West Sussex. We send applicators to Whitehall for mastic joints. Our West Sussex coverage takes in 373 places. We also cover Brighton, some 15 miles away.
Postcode districts covered here: RH13. Nearby places we also cover include Shipley (1 mile north-east), Broomer's Corner (1 mile west), Dragons Green (1 mile north), Dial Post (2 miles south-east) and West Grinstead (2 miles east) for mastic joints. Bigger towns within reach include Crawley (12 miles north-east), Horsham (6 miles north-east), Worthing (11 miles south), Haywards Heath (12 miles east), Burgess Hill (11 miles east) and Littlehampton (13 miles south-west).
Local landmarks in Whitehall
For rail, the closest station is Billingshurst station, about 3.8 miles north-west of the centre. The countryside around Whitehall includes Knepp Wildland.
How a job runs
We follow your site rules from the start: signing in, inductions and any permit to work. With the paperwork done, we take the joints in the sequence agreed with you. If others near Whitehall need work, visits can be combined. A fixed quote is given before anything starts.
- We check the asbestos register for older buildings and look at the joints.
- The products and programme are set out in a fixed quote.
- Failed mastic is removed completely.
- The joints are prepared and resealed with the right product.
- We finish each building before moving to the next.
Preparing the site
- Send your site hours and access windows
- For older buildings, check the asbestos register before work
- Tell us what induction or permit system the site runs
Get a fixed quote
Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, call 01277 525 020 or send photos by email.
Related advice
Maintenance after handover
Your facilities or cleaning team can help the joints last. Pass these on to them:
- Avoid piecemeal callouts where you can
- Mention RAMS, insurance or CSCS requirements up front
- Check sealant joints during planned building inspections
- Check the asbestos register before any old mastic is disturbed
If a joint we sealed fails within 12 months, tell us and we will look at it. After that, regular inspection keeps the programme on track.
Budgets are easier to plan when sealant is part of planned maintenance. A programme can start with the worst buildings and work down the list.
What sealant work can’t fix
Before quoting, we check that sealant is the right answer. It won’t put right:
- Failed window or door frames, which need a window contractor
- Cracked or crumbling render, brick or stone at the joint edges (we’ll tell you if so)
- Asbestos-containing sealant, which we don’t remove
If in doubt, phone 01277 525 020 or email a schedule or drawings and we’ll say what we think before you book.
Surfaces we seal
- External wall and movement joints
- Shopfronts below residential blocks
- Communal kitchens and washrooms
- Communal entrances and stairwells
- Window and door perimeters on blocks
- Balcony and threshold joints
How the job changes by surface
Tenement and older buildings
Older mastic can contain asbestos, so we check the asbestos register or survey first. Suspect material is tested before work continues.
External movement joints
Brickwork, blockwork and panel joints let a building move. Failed sealant in a movement joint lets water in.
Cost factors for mastic joints
Sealant work doesn’t have a standard rate, because every site is different. What we look at:
- Working within restricted access windows
- The product specified
- How much existing material needs removing
- Travel to remote or island sites
The price depends on the quantity of joints, what has to come out first and the access. Call for a fixed quote once you have the details.
Details that help us quote
A few photographs plus some basic facts will normally do. Please tell us:
- Asbestos survey details if the building is older
- Whether the building will be occupied during the work
- Where the site is, with the postcode
- Access details, including height
Pricing a project or setting a maintenance budget? We will quote against your scope and drawings that you can work with. For a chat about it beforehand, phone 01277 525 020 or email drawings and photos.
Also near Whitehall
More services for Whitehall
What we’re called out for in Whitehall
We often find joints filled solid with no backing rod so the mastic is bonded on three sides. That three-sided adhesion stops it stretching and splits as the building moves.
What tends to prompt an enquiry:
- Movement joints with sealant missing
- Leaks at window and door perimeters
- Old repairs sealed over failed mastic
- Communal area joints that look neglected
Property owners at sites such as Pondtail Farm (Business Park) (to the north-east of Whitehall) can have mastic renewed between lettings.
Before you book anyone
- Do they follow the manufacturer’s priming guidance?
- Will RAMS and insurance details be available?
- Who will actually carry out the work
- Their pre-qualification and accreditations