Mastic contractors in Netley
Planning work on a mastic package in Netley? We look at it, seal it with the right product and hand it over with a 12-month guarantee.
- New external sealant already peeling away
- Missed perimeter joints on a new elevation
- A long mastic snag list close to completion
Construction mastic for Netley sites
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
How we handle construction mastic in Netley
On refurbishments, the mastic package usually includes cutting out old sealant as well as sealing new work. Old beads come out completely, as fresh silicone can’t grip old. After that, the joints are prepared and sealed to the specification. If you have different trades sealing to different standards and bath and shower joints scraped during the final clean, we can help, whatever the surface. Most enquiries from Netley 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.
On a small site around Netley, the mastic is best done in the fewest visits we can manage. Let us know the key stages and we will time the work so nothing waits on us.
Every job ends the same way: guaranteed. Our workmanship is backed for 12 months, and we explain exactly what that covers when we quote.
- Place
- Netley (SO31)
- Region
- Hampshire
- Guarantee
- 12 months on every job
- Price
- Quoted before any work starts
- Call
- 01277 525 020
- Page updated
- 3 November 2026
Work for main contractors and building owners
Agents, factors and owners’ representatives all follow the same route: send the details, accept a fixed quote, and we carry out and guarantee the work. We can agree access arrangements and keyholder contacts beforehand.
Facilities managers want contractors who arrive with the paperwork sorted. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we’ll confirm them with the quote.
Your questions answered
Can you take on a job at a hospital such as Hythe Hospital?
Yes, hospitals are one of the sectors we cover. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.
Could you schedule work at a campus like Southampton Solent University for the vacation?
Yes. We plan campus work around teaching, exams and residence turnarounds. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.
How many days will you need on site?
We plan the time on site around your programme and access. We will give you an estimate of time on site when we quote.
Do you work in Netley?
Yes. Netley falls within our area, and you can give us a call on 01277 525 020 or email the details over to get started.
Can you work to our specification?
The specified product is what goes in. Any suggested alternative is put to you before anything changes.
How do you deal with asbestos in old sealant?
Some older mastics, especially in pre-2000 buildings, can contain asbestos. Before we disturb old sealant in an older building, we ask to see the asbestos register or survey, and work stops until any suspect material has been tested. Removing asbestos is a job for asbestos specialists, not us.
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, because fresh silicone will not bond with aged silicone.
After the work
Every sealant joint needs some looking after, and how long they last depends on how they’re treated. We suggest:
- Check frame gaps are within the sealant’s range before sealing
- Keep finished joints away from paint, plaster and scrapers
- Release areas for mastic once other trades have finished in them
- Don’t force external sealing on a damp or frosty day
Once an area is sealed, protect it from following trades. New beads should be left to cure before cleaning or decorating nearby; we confirm the time for each product.
One unsealed frame can let water into finished internal areas. That typically means redoing finishes in a completed area and possibly a delayed handover. A check of every frame before decorators start is worth the time.
How a job runs
Before any cutting starts, the area is protected: masking tape along the joint edges and sheeting over anything nearby. On site, the work normally takes a day or two on a small fit-out and several weeks on a large multi-storey package, and we clear our waste as we work. For a site in Netley, we plan so the whole job is done in one go where possible. Clear photographs and measurements help us bring the right products.
- First we take quantities off the drawings and read through the specification.
- A fixed quote sets out the scope, the products and the sequence.
- Any site paperwork you need (RAMS, insurance certificate, CSCS details) is confirmed with the quote.
- We seal each plot or floor as it’s released to us.
- Every joint is prepared, set to depth and sealed with the specified product.
- We close out snagging and hand over with a 12-month guarantee.
Getting the site ready
- Confirm the product named in the specification
- Point out parking and an unloading spot
- Agree which areas must stay open
Ask for a quote
Specifications, drawings and tender packages are welcome with any enquiry, and we will price against exactly what is specified. For smaller jobs, photographs and a description will do.
Read more
Also near Netley
Also in Netley
What sets the cost
There’s no standard rate for sealant work, because every site is different. What we look at:
- Joint width, depth and condition
- Removal of failed or old sealant
- Specialist products, such as fire-rated or hygienic sealants
- Phasing around occupants
Access often affects the price as much as the sealing: joints within easy reach take less time than ones that need access equipment. Tell us how the joints are reached and call for a quote.
Sending details for a quote
Diagnosis starts before we arrive. Tell us:
- Photos of the joints, close up and from further back
- How the joints are reached, and at what height
- Whether the building will be occupied during the work
- Approximate linear metres or a joint schedule
Send us photographs, drawings or a joint schedule and a fixed quote comes back to you. If the job needs a look first, we’ll arrange a site visit.
Why deal with it now?
Refurbishments sometimes budget for new windows when the frames are sound and only the seal has failed. If the frame is in good order, cutting out and resealing the perimeter can be all it needs. We’ll say so if a frame itself is the problem. Small buildings around Netley suffer from failed joints as much as large ones. Early resealing avoids the damage that follows a leak.
Small jobs and large programmes are priced from the same things: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote, and you will have a fixed figure to work with.
What you get with us
- Work to your specification and the manufacturer’s guidance
- A Constructionline member, so easy to vet
- Fixed quotes based on photographs, drawings or a visit
- Joints cleaned back to sound surfaces
Take a look at our cost guide and our accreditations and insurance.
Facades, frames and programmes in Netley
Netley sits close to the coast, within about 1 mile. Schemes this close to the sea see their facade joints tested by wind and rain from the day they’re sealed, which puts weight on correct joint sizing, priming and a sealant suited to the exposure. The South East is one of the drier parts of the UK. Winter mornings still bring frost and condensation on frames and panels, so the external programme keeps a little slack.
When a school such as Netley Abbey Infant School is extended or refurbished, the mastic package is often squeezed into the holidays. Further education sites such as Southampton City College Marine Skills Centre, 2.2 miles to the north-west of Netley, are extended and refurbished from time to time, with mastic often programmed into the summer break.
Netley is about 3 miles north-east of Hythe, in Hampshire. Businesses, contractors and managing agents in Netley can call on us for mastic packages, as part of our coverage of Hampshire. We work across 723 places in Hampshire.
Business premises anywhere in SO31 are within our area for mastic packages. Buildings on Station Road, The Crescent and Hunt Avenue are within our area for mastic packages. Sites close to Netley are covered too, including Butlocks Heath (1 mile north-east), Hound (1 mile south-east), Weston (1 mile north-west), Old Netley (1 mile north-east) and Lowford (1 mile north-east). Bigger towns within reach include Winchester (13 miles north), Gosport (10 miles south-east), Eastleigh (6 miles north), Fareham (7 miles east), Horndean (15 miles east) and Totton (8 miles west).
Around Netley
We work on buildings around Grove Park Business and Enterprise College, Westwood Woodland Park and The Hamble School and the streets around them. Netley has its own railway station: Netley station. Well-known places in the area include Bursledon Brickworks Industrial Museum (2.5 miles east) and Coldeast (2.8 miles east). Not far away are Mercury Marshes.
When to call us in Netley
Most mastic snags on new buildings come from sequencing rather than product. If sealant goes in before the last trades are through, it gets knocked, painted over or contaminated, so they end up back on the snag list.
Look out for the following:
- Existing joints on a refurb that need cutting out and resealing
- Internal caulk splitting as the building dries out
- New external sealant already peeling away
- Mastic snags holding up handover
On a campus such as Southampton Solent University, 3.2 miles north-west of Netley, new teaching buildings and residences are usually built and refurbished around the academic year.
Questions to ask before you book
- Their approach to joint depth and backing
- How they handle RAMS and site documents
- The terms of the workmanship guarantee
- Health and safety accreditation such as CHAS