Roof leaks: DIY repairs and tips

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Roof leaks: DIY repairs and tips

We will tell you how to restore a roof made of metal, shingles, and nodules and how to seal a leak with self-adhesive sealant roofers aberdeen can hel

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We will tell you how to restore a roof made of metal, shingles, and nodules and how to seal a leak with self-adhesive sealant roofers aberdeen can help you find the best solution

Occasionally leaks occur through the fault of the bending rafters, that is, errors in the calculation and construction of the supporting structure. More often – due to low-quality roofing components and improper installation of the coating. Moreover, each material has its own pros and cons, its strengths and weaknesses, and, of course, its own methods of recovery. Let’s analyze all the subtleties of roof repair. 

Repair of roofs from different materials

Metal roof

Typically, leaks in this coating are caused by cracking of the sealing washers of the fastening screws. Hence the main rule: fasteners should only be purchased with durable EPDM washers. Ideally, before purchasing, you should consult with the support service of the manufacturer of the metal tile about the reliability of the selected fasteners.

Well, if the trouble has already happened, there is nothing to be done – you will have to hire roofers to consistently replace all the fasteners (perhaps only on the southern slope). Attempts to identify leaks and carry out local measures are useless in this case. 

Another common cause of leaks is the loosening of sheets by the wind when the fasteners are located incorrectly (haphazardly or too rarely). This defect is easier to fix – it is enough to increase the number of screws and tighten those that have already been installed.   

Finally, metal roofing can leak due to through rust in places where the protective paint and varnish and zinc coating is damaged (during installation, falling branches, cleaning snow, etc.). The repair method in this case depends on the size of the defect. If it does not exceed a few millimeters, remove the rust with a wire brush and then cover the hole with polyurethane sealant. 

If it exceeds, after treatment against corrosion, a patch of glass cloth impregnated with epoxy resin is placed (after the resin has dried, this place is painted over with enamel). In some cases (strong dents, holes), you have to cut out a part of the sheet and put a steel patch – it is mounted so that the upper edge goes under the upper part (or ridge lining), and is fixed with self-tapping screws, aluminum rivets, or soldering. Similarly, repairs from roof leaks from a profiled sheet are carried out.

From corrugated bituminous sheets (ondulina)

And here the main problem is connected with fasteners. Long nails that are driven into a wave sometimes bend, enter at an oblique angle. As a result, the hole from the fastener increases, and the head does not fit snugly against the material. If the installers do not immediately eliminate such defects, in heavy rain, when the snow melts, the finish will slightly leak. It’s easy to fix – it’s much more difficult to find a crooked nail.

A roof made of bituminous sheets, like metal, can leak due to leaks at the joints. Moreover, the likelihood of such problems is much higher, since the material changes significantly when heated and cooled. Over time, the joints diverge. In addition, the rough surface contributes to the emergence of a capillary effect, due to which moisture moves up the slope.

Additional nails, bitumen sealant will help to seal the joints. Ondulin of new rulers with interlocks is less susceptible to such leaks. Bituminous pastes are inexpensive, but they melt in the sun and are therefore difficult to work with in summer. Compositions based on rubber are preferred. Local damage on ondulin is eliminated with bitumen-based mastic, a layer of which, if necessary, is reinforced with fiberglass.

From flexible shingles

This material can leak due to incorrectly or crookedly driven nails, not removed the film on the adhesive layer, uneven lathing (from low-grade boards without a sheet material flooring device). All this interferes with the transformation of the coating into a single waterproof layer, causing the formation of cracks. Moreover, defects usually do not appear immediately after installation. Therefore, repair of the leakage of the roof of a glazed balcony, for example, may be necessary only after a few years. Moss can contribute to the penetration of moisture under the roof. 

Roof leak repair with self-adhesive sealant

The self-adhesive sealant tape will help to repair the roof and eliminate small leaks. It is a bitumen-polymer sealing material with a thickness of 1.5 mm, covered with a colored aluminum film on top, which protects the tape from UV radiation, imparts skeleton and allows rigidly fastening the elements to be sealed. The bottom of the tape is covered with an easily removable protective film. 

Self-adhesive sealant is suitable for repair work on flexible and natural tiles, metal tiles, slate, roll materials, as well as on the rebate. For laying, you will need a tool that can be found in every household – a tape measure, a marker, a knife and a rolling roller, or something replacing it, gloves, a small piece of cloth. 

Work order

Before gluing the tape, the surface must be cleaned and degreased. The surface and material temperature must be at least +5 ° С. 

Measure and cut the required amount of sealant. For more reliable sealing, the tape should overlap the hole by 3-5 cm from each edge, depending on the amount of damage.

Remove the protective film and apply the tape to the surface, then press firmly with your hand, preferably with a rolling roller. Also we offer fast and reliable locksmith Aberdeen services. Our team consists of trained professionals to assist our clients with any kind of locksmith requirements