The Mastic Doctor team standing beside their branded vans outside an office building
Hampshire · England

Purbrook Heath mastic sealing

We carry out mastic sealing for building owners, managing agents and housing associations in Purbrook Heath. Send photographs or drawings for a fixed quote.

  • Damp patches beside frames
  • Worn sealant at communal door frames
  • A mix of products and colours from past repairs
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
CHAS accredited
£5m PL insurance

Mastic sealing for Purbrook Heath sites

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

Should maintenance staff do it?

Redoing a failed joint usually costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.

Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.

Mastic sealing in Purbrook Heath

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’ll confirm with the quote. We are CHAS accredited and a Constructionline member, with public liability insurance. Site teams most often ask us about complaints coming in block by block and a mix of products and colours from past repairs, across balcony and threshold joints, window and door perimeters on blocks and communal entrances and stairwells. One point of contact handles commercial sealant work in Purbrook Heath from the first photographs to the final walk-round, for single jobs and planned programmes alike.

For buildings around smaller places like Purbrook Heath, we group work so one trip covers it. Photos of each elevation help us quote accurately.

Our 12-month guarantee is about workmanship, not wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we spell out the cover before we begin.

Place
Purbrook Heath (PO7)
Region
Hampshire
Guarantee
12 months on our workmanship
Quotes
A fixed quote before we start
Call
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

FAQs: Purbrook Heath

Will you take on work at estates like Oak Park Industrial Estate, close to Purbrook Heath?

Yes. We cover Purbrook Heath and the area around it, including industrial estates, business parks and retail parks such as Oak Park Industrial Estate. Photos and a short description are enough for a first look.

Will you take on a block within reach of Cosham station?

Yes. Blocks of any size are within what we do. Send the address, photographs of the elevations and your access arrangements, and we’ll give a fixed quote.

Is it fine to apply new sealant on top of old?

No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.

How do you reach windows on upper floors?

It depends on the building. How upper joints are reached is agreed before work is booked so the fixed quote reflects it.

Can you reseal a whole block or estate?

Yes, planned programmes suit estates and portfolios. The quote can be split however suits your budgeting.

Is asbestos a concern with old mastic?

We don’t remove asbestos-containing materials. Anything suspect is tested before we carry on in line with the dutyholder’s asbestos management.

When is resealing likely to be due?

Nobody can honestly give a figure in years, since movement, weather, cleaning and use all affect it. Regular inspection is the best way to catch problems early.

Quoting for work in Purbrook Heath

What shapes the price:

  • Working within restricted access windows
  • Which sealant the job calls for
  • Backing rod, priming and other preparation
  • Induction, permit and paperwork requirements

The product called for affects the cost, and so does the preparation. Access, phasing and site requirements come into it too.

What we need to price the job

However big the job, the same details help:

  • Where the site is, with the postcode
  • The product your specification calls for
  • Any dates the work must fit around
  • Rough lengths or quantities, or drawings if you have them

Send us photos, drawings or a joint schedule are often enough for a fixed quote. Where a site visit makes more sense, we’ll arrange one.

Do you need mastic sealing in Purbrook Heath?

Occasionally the substrate fails, not the sealant for example where render or brick edges crumble. If the edges are unsound, we say so before quoting the sealing.

Things that usually lead to an enquiry:

  • Movement joints with sealant missing
  • Occupiers reporting cold air round windows
  • A mix of products and colours from past repairs
  • Damp patches beside frames

If you look after a block within reach of Cosham station, which lies south of Purbrook Heath, frame and balcony mastic can be renewed on one programme.

What to look for in a quote

  • The named product and why it was chosen
  • How they handle RAMS and site documents
  • Their approach to joint depth and backing
  • Health and safety accreditation such as CHAS

Questions to ask before you appoint anyone

Commercial clients in Purbrook Heath

For main contractors, we work as the sealant subcontractor, on new build and refurbishment alike. We work to your programme, your specification and your site rules, and our applicators hold CSCS cards.

Blocks and communal areas make up much of the work for housing associations and agents. We phase the work so people keep access, with each stage agreed with your site contact.

After the work

Problems stay small when the joints are checked regularly. In particular:

  • Encourage occupiers to report problems at frames
  • List the paperwork your organisation requires when you send details
  • Keep a record of when each building was resealed
  • Protect low-level joints in entrances

If a joint we sealed fails within 12 months, tell us and we’ll look at it. Beyond that, routine checks spot the next round of repairs.

Water getting in round frames can damage plaster, decoration and the frames themselves. Resealing early keeps the job small.

Blocks and managed buildings in Purbrook Heath

Purbrook Heath sits close to the coast, within about 2 miles. For owners and agents with buildings near the sea, exposed elevations are where frame mastic fails first. The South East is one of the drier parts of the UK. Even so, frame mastic only goes on in dry, workable conditions, and the sunniest, most exposed sides of a building typically need attention first.

Churches, halls and community buildings such as Church of St John are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time. Site managers at schools like Purbrook Junior School can fit frame mastic into the summer works.

Purbrook Heath is about 1 mile west of Purbrook, in Hampshire. We cover commercial sites throughout Purbrook Heath, for single jobs and planned programmes alike. We work across 723 places in Hampshire.

Postcode districts covered here: PO7. For a building on Newlands Lane and Purbrook Heath Road or nearby, we can quote for mastic joints. Just outside Purbrook Heath, we also work in Widley (1 mile south), Purbrook (1 mile east), Waterlooville (1 mile north-east), Furzeley Corner (2 miles north) and Drayton (2 miles south). A short drive away, we cover Gosport (6 miles south-west), Havant (3 miles east), Eastleigh (14 miles north-west), Fareham (6 miles west), Horndean (3 miles north-east) and Hedge End (11 miles west).

Near you in Purbrook Heath

Locally, jobs take us to sites close to George Inn and Purbrook Park School. The nearest railway station is Cosham station, about 1.9 miles south. Nearby you’ll also find Queen Alexandra Hospital (1.3 miles south-west) and Portchester Castle (3.4 miles south-west). Green spaces nearby include Southmoor Nature Reserve and Portsdown Hill.

Map of Purbrook Heath © OpenStreetMap contributors

On site: what to expect

Site rules come first: signing in, inductions and any permit to work. Once we are cleared to begin, we take the joints in the sequence agreed with you. If others near Purbrook Heath need work, visits can be combined. You’ll have a fixed quote before work starts.

  1. First comes a look at the joints and, for older buildings, the asbestos records.
  2. A fixed quote covers the joints, products and order of work.
  3. We strip out the old sealant.
  4. The joints are prepared and resealed with the right product.
  5. Buildings are completed in turn.

What we need from you

  • Let us know about inductions and permits
  • Make sure the joints can be reached
  • Confirm the product named in the specification

Quotes

Pricing a project or setting a maintenance budget? We will quote against your scope and drawings you can plan around. For a chat about it beforehand, call the office on 01277 525 020 or email a schedule or drawings.

Ask for a quote

Related advice

Accreditations

Trusted. Accredited. Insured.