Before I saw it, I thought that these are such magical trousers that do not tear, and also do not burn in fire and do not drown in water;) But my eldest hung on the fence .....

1. For repairs, you will need: glue "Moment" rubber (or other universal glue), scissors, any plastic bag, toothpicks

2. The main task is to bring the torn edges of the membrane fabric as tightly as possible to each other, but not overlap. To do this, you need a layer of polyethylene, which is placed BETWEEN the membrane and a thin lining of fabric (in my case, it remained intact). Accordingly, I essentially have two cuts, so I cut out two strips from a plastic bag much wider and slightly longer than the cut. First, we put one strip and, helping ourselves with a toothpick (or something thin), we smear the polyethylene and the edges of the membrane with glue. We bring the edges of the joint to the joint. (quite laborious, maybe, the glue sticks to the fingers and dries quickly). We repeat the same operation with another incision.

3. We glue the corner of the connection of the cuts last. There are two difficulties in this operation: to have time to bring the edges of the fabric together before the glue began to grab them strongly (if we didn’t have time, we pull out a strip of polyethylene, cut out a new one and start all over again) and not to smear the trousers with glue around the cut (then it is rubbed off badly)
The result of the repair is this:

PS: strength was tested on the hill on the same day - beyond praise;)
ZY2: They say that there are magical patches for the membrane and such patches and even repair kits are sold in magic stores "for hunters and fishermen." However, I didn't see it.

The roofing membrane is considered a heavy-duty material, but even it is not immune from damage. Over time, holes appear on it, the seams diverge. However, you should not be upset: it is easy to return the former appearance to the polymer membrane. Only first you need to determine the cause of its damage.

The main causes of damage to the membrane roof

The need to repair the roof of the membrane most often arises in four cases:

Any damage to the membrane roof contributes to the penetration of moisture into the insulation. It collapses and spoils neighboring materials, destroying the entire roofing cake.

Due to damage to the membrane, the heat-insulating layer can absorb so much moisture that the vapor barrier film under it cannot withstand the pressure and breaks. As a result, the property in the house will be flooded with water.

Membrane roof repair technology

How a membrane roof is repaired depends on whether the problem is a cut or a split seam. But in any case, a patch is applied to the damaged area of ​​the membrane web. It can be used as hot way her stickers on roofing, and cold.

Cut and divergent seam require different approach v repair work Oh

Elimination of cuts

Restoration work upon detection of any cut on the membrane sheet is usually carried out in a hot way:

Video: how to glue a membrane patch in a hot way

Alternative cold way- attach a new piece of material to the glue. The sequence of such repairs:

1. The defective area is cleaned of soapy dirt warm water and dry thoroughly.
2. A patch is cut out from the strip of the unused membrane, covering the cut site by 5–10 cm in the same size.

   After cleaning the damaged area, a patch of the required size is selected, rounding its edges, a primer is applied, the patch is glued and additionally treated with sealant around the entire perimeter

3. With a medium-sized paint roller or a small brush, the repair area is treated with a primer (sealant). The agent is applied in a thin layer.
4. On the wrong side of the patch, a special glue is squeezed out for the repair of membrane roofs. It may be composition SA-008. The patch is glued and pressed against the surface with a steel roller.

   Glue SA-008 sticks together EPDM membranes even at low and negative temperatures

5. The edges of the patch are treated with a sealant. When the moisture barrier has hardened, the edges of the glued piece of membrane are sanded. Otherwise, the remaining tubercles of the composition will slow down the flow of water from the roof.

   Coating the edges of the patch with sealant gives excellent result after repair

This roofing repair manual is only suitable for EPDM (ethylene propylene rubber) membrane. When working with other types polymer coating roofs (TPO and PVC) will need a hot air gun.

Membrane repair with insulation replacement

If even the insulation is damaged under the roofing membrane, then the repair technology is as follows:

1. On the defective section of the roof, the membrane is carefully cut and the damaged piece of insulation is pulled out.

   It is necessary to cut out all the wet parts of the old insulation in order to dry the place well for laying the new insulation.

2. The repaired area is cleaned and dried.
3. A new layer of insulation is inserted into the prepared hole.

   Insulation damaged by moisture must be replaced with a new one.

4. The incised membrane is folded back. A large patch is welded to this place, rolled with a roller.

   At the repair site with the replacement of insulation, it is better to work with a partner, since the patch is large in size, which requires high-quality gluing of all edges

Soldering seams

If the seams on the membrane roof have parted, the following measures are taken:

1. The delamination area is carefully cleaned of dirt and wiped dry with a cloth.
2. On the manual apparatus, the necessary temperature regime recommended by the membrane manufacturer. The nozzle is placed between the canvases at a depth of more than 4 cm and smoothly moves forward, lingering in each section for 2-3 seconds.

   The device must be kept in one place for several seconds, while rolling the heated part of the material with a roller

3. Then the hair dryer is drawn along the seam again, but very quickly. In this case, it is necessary to press the membrane with a steel roller near the edge of the nozzle.
4. A little later, hot air is blown into the heat pocket: the apparatus is held at an angle of 45°. Its tip extends beyond the overlap by 3 mm. Following the nozzle at a distance of 5 mm, the seam is sealed with a roller.
   

   Immediately after treatment with hot air, the edges of the membrane are used with a roller

5. Then a patch is applied to the place of repair of the seam and also welded with a hairdryer.

   At the joints of the canvases, small rounded patches are usually placed, in which all corners are cut off.

Gluing seams with self-adhesive tape

Another way to keep the seams in order is to seal them with adhesive roll tape. It reliably sticks to the membrane, becoming a single whole.

Membrane roofing can be repaired with EternaBond tape. This composite material based on a viscous primer with the addition of resins, thermoplastic components and unvulcanized rubber.

EternaBond is suitable for both internal works, and for the repair of membrane roofing, does not require special knowledge and skills in the sticker

The method of sealing the membrane with rolled tape is as follows:

Video: how to weld the seams of a PVC roofing membrane

Features of repair work in sub-zero temperatures

It does not matter if the membrane roof suddenly has to be repaired in the winter. The polymer carpet does not absorb water and is not afraid of frost. Manufacturers and experienced builders they say that the membrane can be fixed on the roof at temperatures up to 15-20 degrees below zero. And some types of polymer coating (for example, TPO) are allowed to be fixed with a hot air gun even at lower temperatures. The main thing is to do it quickly so that the material does not have time to cool.

V winter period it is better to make temporary repairs on the membrane roof: this will allow you to calmly survive severe frosts and wait for warm weather, if later a more complex restoration of the coating is needed

MK Seam gluing on the membrane.
Details in the source:
From the author:
On a membrane raincoat fabric, the seams and punctures from the needles must be sealed, otherwise water will cheerfully seep through the holes, steam will actively turn into ice in these places, and so on, and the result will not be a magic membrane, but very expensive, but quite ordinary, raincoat fabric.

For the same reason, by the way, you can’t chip parts with pins - so that there are no holes left. You can use pins either on those parts where the functionality of the membrane is not needed (pocket flaps, cuffs), or chipping off those parts of the allowances that remain from the inside out or are generally cut off later.

Seams on the membrane can be sealed in a variety of ways. Here are the main ones:

First way. Lubricate with glue. Any polyurethane adhesive that remains elastic after drying is suitable, you must first check that the adhesive does not dissolve the membrane coating. The technology is simple - coat with glue, dry, coat again, dry again, ready. I used this method for gluing seams that hold decorative elements on the trousers. In the distant 90s, this method was widely used even in large-scale industries.

The second way.
Using a special tape for gluing seams. In fact, the magic of this ribbon is greatly exaggerated, perhaps because it is not sold in all shops, so it has acquired a haze of some mystery. This tape is a kind of adhesive tape with hot-melt adhesive that melts when high temperatures. That is, on the one hand, it sticks and, as it were, melts into a raincoat fabric, and on the other, it remains a film.
To work, you will need an iron (set it to two points, or “synthetics”), wooden block a couple of mm wide already ribbons, ribbon, scissors and the product.
We grind the seam, stitch it, etc., as intended according to the model, or we simply cut the allowances to the width so that it is enough to cover with a ribbon, and simply bend them together in one direction (they do not make seams on the membrane).
We impose the product on the bar so that the iron does not touch the raincoat fabric where it is not necessary. We put a ribbon on the seam with the sticky side down (it’s not visible to the eye - we determine it experimentally on the cut), cover it with waxed paper on top, press it for a few seconds, remove the iron and paper - a piece of the seam is ready. We shift the product in order to lay the next piece of the seam more conveniently, glue it, move on. And so along the entire seam. You don’t have to move the iron back and forth, you need to press it, hold it, remove it, you can press it again or at a different angle, if suddenly something didn’t stick. If you drive with an iron, you can move everything.

Method three.
We cut ribbons from the same fabric with a membrane, put the ribbon on the seam with the membrane to the membrane, and glue two layers of fabric with an iron through paper. The membrane melts at a moderate temperature and the two membranes will fuse fairly tightly.

Method four
Proven by ancestors. We cut strips from something waterproof, even from the same membrane, even from a PE film, and glue them carefully with glue on all the seams. This method does not require an iron. They say once upon a time, a very, very long time ago, hermetic bags were made in this way, and the technology works quite well, only painstakingly.

Membrane roofing is a modern and, perhaps, the most perfect solution for soft roofing. The combination of reliability, increased resistance to climatic and atmospheric influences, elasticity, ability to maintain quality characteristics within a wide temperature range puts this material in a range of advanced and high quality.

The use of polymer membranes in the device soft roofs is already a guarantee of the quality of the coating and its durability. Membrane roof repair subject to compliance right technology laying the coating is needed much less frequently than in the case of other materials. Its maintenance-free service life is from 30 to 60 years.

The biggest advantage of such roofs is resistance to extreme temperatures, which allows the membrane to be used in a variety of conditions.

What are membranes

The roofing membrane is a film polymer material. It is rather difficult to name its exact composition, since the constituent components of different manufacturers may or may not match. To obtain better samples, it includes modified bitumen, fiberglass, various plasticizers, and more.

Today, the market offers three ways to install such a roof:

- it is based on plasticized PVC, reinforced for strength with a polyester mesh. Volatile plasticizers provide plasticity to it, this is about 40% of the composition. by welding the sheets with hot air into a single sheet. The work is carried out using special equipment. It is UV and fire resistant. However, the bright colors fade somewhat over time, and the material is also resistant to oils, bituminous materials and solvents. Another negative factor is the selection of the canvas volatile compounds in atmosphere.

TPO - the basis is thermoplastic olefins, which are reinforced with either fiberglass or polyester (non-reinforced products are also found). Due to the absence of volatile plasticizers in the composition, it is not so elastic, which makes installation difficult. It, as in the case of polyvinyl chloride, is performed by welding the webs with hot air. The service life of the resulting coating reaches 60 years, it is characterized by high strength and reliability even when low temperatures. Installation can also be carried out in winter.

EPDM - the synthetic rubber underlying it is reinforced for strength with a polyester mesh. The product has the highest elasticity and relatively low price. mainly on the adhesive, and although it provides sufficient bonding strength for the EPDM coating, the butt joints nevertheless do not lose their "problem" in terms of water flow.

Benefits of membrane coatings

• Durability. The service life is about 60 years.
• High installation speed, since the coating is laid in one layer - the productivity of work is approximately 600 m 2 / shift.
• Possibility to choose the width of rolls allows to cover roofs different configuration, and with the least number of joints.
• High-quality and uniform seam, which is ensured by hot air welding.
• High elasticity, frost resistance, UV resistance, operational and chemical resistance.
• High class of fire safety - up to G-1.
• Exceptional lightness of the coating, which additionally does not overload the load-bearing structures.
• The technical characteristics of polymer membranes make it possible, without changing the technology, to mount them all year round.

With so many advantages, the only disadvantage of the membrane coating is its price. They cost more than their competitors one and a half to two times.

Roofing methods

Depending on the roof structure, installation is carried out in one of three ways.

Mechanical - used for roofs with a large angle of inclination. Fastening is carried out using special fasteners, and the joints are hermetically fastened with special equipment.

Ballast– suitable for roofs with a slope of less than 10⁰. The ballast can be, say, crushed stone.

Adhesive- used for roofs of buildings located in the zone of increased wind loads. The canvas is simply glued to the plane.

How to repair a membrane coating

Although the membrane shrinks within 0.5% over the entire operational period, however, this may be enough to cause stress and depressurization in seam joints. The coating can be significantly damaged when performing all kinds of work, installation on the roof additional equipment or when the roof is carelessly cleared of snow and ice.

To repair seams or repair minor damage, it is, of course, not economically feasible to rent special equipment. Moreover, old membranes partially lose their elasticity, so they weld much worse. Cost increases welding work by 20-25%.

The ideal solution for such cases is the modern EternaBond repair technology, which involves a strong connection of homogeneous membranes. This technology is based on chemical stimulation of adhesion, which ensures the solidity of the adhesive joint, that is, not only tightness, but also the exceptional strength of the seam. Outwardly, this is a rolled tape, on which an adhesive layer is applied on one side - it enters into active reaction with membrane structure.

The restored fragment can serve at any temperature up to 30 years.