Mastic sealing for building owners and managing agents in North Heath, West Sussex
We carry out mastic sealing for building owners, managing agents and housing associations in North Heath. Send photos or drawings for a fixed quote.
- Draughts at frames across a block
- Old repairs sealed over failed mastic
- Damaged joints in communal entrances and corridors
Mastic sealing for North Heath sites
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Honest limits
Part of a good diagnosis is knowing where sealant stops. You’ll hear from us if the cause turns out to be one of these:
- Cracked or crumbling render, brick or stone at the joint edges (we’ll tell you if so)
- Water coming in from the roof or rainwater goods
- Failed window or door frames, which need a window contractor
If you are not sure, just call 01277 525 020 or use the quote form and we will give you a straight answer before you book.
Where we work in North Heath
- Communal kitchens and washrooms
- Communal entrances and stairwells
- External wall and movement joints
- Shopfronts below residential blocks
- Balcony and threshold joints
- Window and door perimeters on blocks
How we handle mastic sealing in North Heath
Treatment starts with a proper look: which joints have failed, why, and whether sealant is the right answer. Failed mastic is stripped, the faces taken back to sound material, primed where the manufacturer specifies and resealed, with backing rod setting the depth where it’s needed. If you have cracked, hardened mastic round windows on a block and damaged joints in communal entrances and corridors, we can put it right, whatever the surface. Most enquiries from North Heath start with one failed joint and grow into a wider look at the building: we look at the rest while we are there and tell you what we find.
In and around smaller places like North Heath, landlords and agents often look after small groups of housing association properties, converted farm buildings and community buildings. Frame and wall-joint mastic on all of them ages and hardens.
Every job ends the same way: guaranteed. Our workmanship is backed for 12 months, and the quote explains what it covers.
- Location
- North Heath (RH20)
- Region
- West Sussex
- Cover
- 12 months on our workmanship
- Price
- Quoted before any work starts
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
After the work
After handover, a little attention goes a long way:
- Mention RAMS, insurance or CSCS requirements up front
- Look at the sunniest and most exposed elevations first
- Keep a record of when each building was resealed
- Protect low-level joints in entrances
Where a paintable product was specified, it can be painted after curing. Silicone normally can’t be painted, so keep decorators off it unless told otherwise.
The longer failed joints are left, the more likely the substrate edges break up. Once that happens, repairs come before resealing and the job grows.
What sets the cost
Sealant work doesn’t have a standard rate, because every site is different. What we take into account:
- Specialist products, such as fire-rated or hygienic sealants
- Access and working height
- Joint width, depth and condition
- How much there is to seal
No two sites price the same: the joint sizes, the specified product, access and working hours each have a bearing. Send the details and a fixed figure follows.
What to include in your enquiry
Whether it’s one area or a whole building, the same details help:
- Asbestos survey details if the building is older
- The type of building and who uses it
- Approximate linear metres or a joint schedule
- Anything awkward about access or site hours
Let us know the site, the scope and your timescale, and we will put a fixed quote together. The easiest way is to ring 01277 525 020 or send details through our quote form.
Why it’s worth doing now in North Heath
Failed perimeter mastic lets cold air in around frames and the windows usually get the blame. In many cases, new perimeter sealant deals with it when the frames themselves are sound. One visit to deal with every failing joint makes more sense than several trips to a place like North Heath. Photos of every joint help us quote for the whole job.
The work involved drives the cost: stripping out, preparation, sealing, access and phasing. Call for a quote.
Why choose Mastic Doctor in North Heath
- Public liability insurance in place
- Products installed to the manufacturer’s instructions
- Standard and matched colours in many product ranges
- Over 20 years of commercial sealing
Take a look at our cost guide and how we’re accredited.
Owners, agents and contractors
Hotels, schools, healthcare sites, offices and retail units book us directly too. We plan around the way the building is used, so the building keeps working while we do.
We work for building owners and managing agents on sealant work across single buildings or whole portfolios around North Heath. One quote can cover more than one site, which keeps the paperwork simple.
Our process
We bring the products specified for the job, along with primers and backing rod. Joint faces are cleaned back to sound, dry surfaces, the manufacturer’s primer is applied where it’s called for, and the sealant is tooled off neatly. If others near North Heath need work, visits can be combined, which keeps travel down. 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.
- We strip out the old sealant.
- The joints are prepared and resealed with the right product.
- We finish each building before moving to the next.
Preparing the site
- Send asbestos survey details if the building is pre-2000
- Let building users know which areas are affected
- Send your site hours and access windows
Getting a fixed quote
A handful of photographs and a postcode is the fastest way to a quote. Upload them with the quote form, or give us a call on 01277 525 020 or email us if you’d rather talk the job through.
Read more
Looking after buildings in and around North Heath
Central London is about 39 miles from North Heath. Commuter-belt towns tend to have plenty of managed blocks near stations and town centres, and window and balcony mastic on them tends to age at the same rate. The South East is one of the drier parts of the UK. External mastic still waits for dry faces and the right temperature, and elevations facing the sun and the prevailing weather are usually where frame mastic ages first.
Property owners at sites such as Broomers Hill Business Park (0.8 miles south-west of North Heath) can have mastic renewed between lettings. Blocks of flats and mixed-use buildings often cluster around stations such as Pulborough station (to the south-west of North Heath) and their window and balcony mastic tends to age at the same rate across a building. Historic properties like Old Place Manor, 2.1 miles south-west of North Heath, show the age of some local stock, where frame mastic must suit soft brick or stone.
North Heath is about 9 miles south-west of Horsham, in West Sussex. Any commercial site in North Heath is covered. Across West Sussex, 373 places are covered, North Heath among them. For work in that direction, see our Brighton page.
Anyone looking for mastic sealing in RH20 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. Streets here include Gay Street Lane and Stane Street, and sites on any of them can send details for a fixed quote. Close to North Heath, our area also takes in Gay Street (1 mile south-east), Adversane (1 mile north), Codmore Hill (1 mile south-west), Broomershill (1 mile south) and Nutbourne (2 miles south). Further afield, our area takes in Crawley (15 miles north-east), Horsham (9 miles north-east), Worthing (11 miles south), Burgess Hill (15 miles east), Littlehampton (12 miles south) and Shoreham-by-Sea (14 miles south-east).
What’s near North Heath
For rail, the closest station is Pulborough station, about 2.4 miles south-west. Not far away are The Mens.
Questions we are asked in North Heath
Will you take on a block within reach of Pulborough station?
Yes. Blocks of any size are within what we do. We work to your notice and access arrangements.
Is North Heath too far out for you?
Not at all. North Heath is within our area. We work across Greater London and the South East. We plan jobs in smaller places so return trips are kept to a minimum.
Will you just go over the old sealant?
No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.
Can weather delay the job?
It can, for external work. Sealant won’t bond properly to a wet or frosty joint, so we watch the forecast and rearrange outside work if we have to. Indoors, the weather is rarely a problem.
How long does a typical visit take?
That varies with the scale of the job, but the work usually takes a few days for most blocks, with larger programmes scheduled building by building. Larger or phased jobs take longer, and we will give you a timescale with the quote.
Can you follow the specification on our project?
Yes. We follow the specification, along with the manufacturer’s installation guidance.
What about access for upper-floor joints?
Every block is different. We agree access with you at quote stage so there are no surprises.