Thatch Treatment in Scarborough

Scarborough is a small, quiet village on the Atlantic side of the peninsula, wedged between fynbos-covered mountain and a wild stretch of beach. Many homes stand empty for weeks at a time, and pests make the most of that.

Scarborough: what drives timber pests here

Timber cladding, decks and thatch here face constant damp, which encourages wood borer. Regular inspections, especially before selling, protect expensive timber work.

Homes range from older wooden holiday cottages and timber-clad houses to modern architect-designed places on the slopes. Some have thatch or exposed timber, and many have large decks. Holiday homes that sit closed up for long periods let rodents, fishmoths and cockroaches settle in without anyone noticing. Wood and damp sea air together put timber at risk.

Mice and rats are the main issue in closed-up homes, followed by fishmoths and wood borer in damp timber. Ants and spiders are common in summer. Wasps nest on decks and under eaves.

A note from the field

If you have a pool or pond next to a lapa, mention it. We plan treatments under thatch so nothing drifts into the water.

Tell-tale signs

1. Droppings on beams or along the top of walls under the thatch.
2. Rustling or scratching in the roof at night.
3. Insects such as cockroaches or spiders falling from the ceiling.
4. Birds pulling reed out of the roof or nesting under the eaves.
5. Tunnels or loose patches in the thatch where rodents have been moving.
6. Fine powder dropping from the poles or laths onto floors and furniture below.

Borer in the poles and laths weakens the timbers that carry the weight of the thatch, which is heavy, and serious damage can mean replacing structural members. Rodents nesting in thatch chew electrical cables, and in a thatch roof that is a fire risk to take seriously. Insects dropping from an open thatch ceiling are a nuisance in homes and a real problem in guest lodges and restaurants. Bird nests in thatch can bring mites into bedrooms below.

What happens when we come out

We start by inspecting the underside of the roof, the poles, the laths and the eaves, looking for borer exit holes, frass and rodent or bird activity. Affected poles and laths are treated with a borer spray or injection designed for timber, applied to the wood rather than soaked through the thatch. For insects living in the thatch, we use a targeted residual treatment on the underside, keeping it as light as will do the job. Rodents are handled with traps and tamper-resistant bait stations placed at wall plates and entry points, and we advise on bird netting or proofing at the eaves. Fire safety of the thatch itself, such as retardant treatment, is a separate specialist job and we will tell you if it looks overdue.

1. Roof inspection

   We look at the underside of the thatch, every accessible pole and lath, and the eaves and ridge.

2. Identify the problem

   We separate active borer from old damage and confirm which insects, rodents or birds are involved.

3. Timber treatment

   Affected poles and laths are treated with borer spray or injection.

4. Thatch and pest treatment

   Insects in the thatch are treated from below and rodent stations or traps are placed.

5. Report and recommendations

   You get a report noting what was treated and any timber that a thatcher or builder should replace.

Prevention that actually works

• Fit bird netting or wire at the eaves if birds keep pulling reed or nesting there.
• Have electrical wiring in the roof inspected regularly, especially if you have had rodents.
• Keep trees and creepers trimmed back from the thatch so rodents cannot step straight onto the roof.
• Have open thatch ceilings in lapas and lodges checked once a year, since problems are easy to see early.
• Do not store firewood or boxes against the walls under the thatch, as they give insects and rodents cover.

What affects the price

The price depends on the size of the roof, how much of the structure is exposed and how many poles and laths show borer activity. A small lapa with an open underside is a very different job from a double-storey home with a closed ceiling. Rodent and bird work is added where needed, and timber that is too damaged to treat has to be replaced by a builder or thatcher.

Adult borer beetles emerge mainly in the warmer months, so fresh powder and holes often appear from late spring into summer. Rodents move into thatch most during the wet Cape winters when it offers dry shelter. Treatment can be done at any time of year, though a dry day makes inspecting the roof easier.

Frequently asked questions

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