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| Expansion joint |
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| code |
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1 copper (€) |
2 stainless steel (€) |
4 prepainted (€) |
| 5820.X |
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54,8108 |
54,8108 |
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| 3 m parts - price per meter |
Technical information
Unimetal expansion joints are elements compensating the expansion, ready to be applied for gutters, shed covering gutters, rectangular built-in gutters, parapets, wall coverings, flat roof framing, wall protections.
The expansion joints consists of two metal stripes on which an intermediate elastic element is vulcanised; this rubber element is the real expansion part.
The expansion joints can be supplied in all the metals available on the market:
titanium zinc,
copper,
aluminium,
stainless steel,
pre-coated titanium zinc,
quartz zinc,
anthracite zinc,
Uginox AME,
Uginox FTE,
Tecu Green patina,
Tecu Oxyd,
Tecu zinn tinned,
galvanised steel sheet.
Material
Why should you use expansion joints ?
All the materials used for building the roof are particularly exposed to a sudden strong rise/fall in temperature. The transition from the hot to the cold stage occurs often in a few minutes in case of thunderstorms, or in spring when passing from the direct effect of sunbeams to the night cold. All the components expand and contract more or less strongly, according to the type of building material.
These "movements" of the building components are also affected, depending on where they are located, by different factors like sunbeams and shadow. Hence, the material creaks.
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| expansion values per linear meter with a difference in temperature of 100°C [mm] |
| concrete |
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1,2 |
| steel sheet |
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1,2 |
| copper |
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1,7 |
| titanium zinc |
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2,2 |
| aluminium |
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2,4 |
It has been established that after the expansion of the material mentioned above, the greatest damaging risks are present for welded joints or stuck joints of bituminous strips. By mounting the expansion joints, the length variations are exactly compensated in the middle elastic part.
Example
In the case of side flashings for flat roofs or wall flashings, single-head elements are used. The head part that extends on the surface of the roof absorbs all the stresses created due to the expansions in side flashings. Hence no shearing stresses are formed on the roof covering (see examples).
Quality
The most important characteristics
• Long life.
• The rubber mixtures used resist against ultraviolet rays, ozone and extreme weather conditions.
• This kind of rubber mixtures has been used for over 50 years in the building industry and it is particularly resistant to sudden changes in temperature.
• Convenient and simple assembly.
• It is easy to assemble and it remains invisible as an expansion element in a perfectly flat position.
Outlines on how to work and lay the expansion joints
The Semmler expansion joints can be bent at the height of the desired profile on any bending machine.
Pay attention to the following:
• The radius of the blade of the bending machine must be equals to at least 2 mm.
• At the height of the rubber central element, la lower bending blade must lower 3-4 mm in order to avoid a shearing effect.
• When the bending is carried out, it is advisable to compensate the expansion sheet at the height on the thickness of the rubber element (upper and lower side).
• The Semmler expansion joints can be inserted on any profile with tinning or welding.
• In the tinning or welding interventions, cover with a wet cloth the sheet in front of the rubber/metal junction point and in front of the rubber central point so that heat is not transmitted on the central part of the rubber. As a rule, keep a distance of at least 6 cm from the central rubber part. Anyway avoid contact with live flame.
Types
Beware of the following
The junction element may be submitted for a short time to the effect of heat without suffering damages, like e.g. when you stick bituminous sheaths or strips with the sticking flange of the expansion joints by using hot bitumen.
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| maximum distances (indicative data) for the expansion joints with stretched length extension |
| hanging in front of gutters <500 mm |
15 m |
| hanging in front of gutters >500 mm |
10 m |
| inserted not stuck, gutters <500 mm |
10 m |
| inserted not stuck, gutters >500 mm |
8 m |
| gutters, stuck gutters, wall protections, side flashings and shed gutters |
6 m |
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The length data must be halved starting from corners and fixed points. The above-mentioned data is gained by several years' practical experience and is considered indicative.
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| Gutter elements with joint-cover - A, K |
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| code |
description |
(€) |
| 582200 |
a aluminium 1.0 sv25 |
15,1369 |
| 582201 |
a copper 06 sv25 |
16,6065 |
| 582202 |
a copper 07 sv25 |
17,3413 |
| 582203 |
a rheinzink 07 sv25 |
15,1369 |
| 582204 |
a rheinzink 08 sv25 |
16,6065 |
| 582205 |
a stainless steel 05 sv25 |
15,1369 |
| 582206 |
a uginox 05 sv25 |
17,3413 |
| 582207 |
a pre-coated rheinzink 08 sv25 |
17,3413 |
| 582230 |
a aluminium 1.0 sv50 |
26,3058 |
| 582231 |
a copper 06 sv50 |
29,3920 |
| 582232 |
a copper 07 sv50 |
31,5964 |
| 582233 |
a rheinzink 07 sv50 |
26,3058 |
| 582234 |
a rheinzink 08 sv50 |
27,1876 |
| 582235 |
a stainless steel 05 sv50 |
29,3920 |
| 582236 |
a uginox 05 sv50 |
29,3920 |
| 582237 |
a pre-coated rheinzink 08 sv50 |
29,3920 |
| 582250 |
k aluminium 1.0 sv25 |
17,3413 |
| 582251 |
k copper 06 sv25 |
18,8109 |
| 582252 |
k copper 07 sv25 |
19,5457 |
| 582253 |
k rheinzink 07 sv25 |
16,6064 |
| 582254 |
k rheinzink 08 sv25 |
17,3413 |
| 582255 |
k stainless steel 05 sv25 |
18,8109 |
| 582256 |
k uginox 05 sv25 |
21,8970 |
| 582257 |
k pre-coated rheinzink 08 sv25 |
21,8970 |
| 582270 |
k aluminium 1.0 sv50 |
28,6572 |
| 582271 |
k copper 06 sv50 |
31,5964 |
| 582272 |
k copper 07 sv50 |
33,8008 |
| 582273 |
k rheinzink 07 sv50 |
28,6572 |
| 582274 |
k rheinzink 08 sv50 |
29,3920 |
| 582275 |
k stainless steel 05 sv50 |
31,5964 |
| 582276 |
k uginox 05 sv50 |
33,0660 |
| 582277 |
k pre-coated rheinzink 08 sv50 |
33,0660 |
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These are gutter elements with joint-cover, vulcanised on both sides. These expansion compensation elements, ready to be mounted, can be supplied for all types of gutters available on the market, for semicircular or rectangular gutters.
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| Gutter elements with joint-cover-AS, KS |
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| code |
description |
(€) |
| 582100 |
as aluminium 1.0 sv25 |
- |
| 582101 |
as copper 06 sv25 |
15,1369 |
| 582102 |
as copper 07 sv25 |
15,8717 |
| 582103 |
as rheinzink 07 sv25 |
12,7855 |
| 582104 |
as rheinzink 08 sv25 |
13,5203 |
| 582105 |
as stainless steel 05 sv25 |
15,1369 |
| 582106 |
as uginox 05 sv25 |
15,8717 |
| 582107 |
as pre-coated rheinzink 08 sv25 |
15,1369 |
| 582130 |
as aluminium 1.0 sv50 |
- |
| 582131 |
as copper 06 sv50 |
27,9224 |
| 582132 |
as copper 07 sv50 |
29,3920 |
| 582133 |
as rheinzink 07 sv50 |
24,8362 |
| 582134 |
as rheinzink 08 sv50 |
25,5710 |
| 582135 |
as stainless steel 05 sv50 |
27,9224 |
| 582136 |
as uginox 05 sv50 |
29,3920 |
| 582137 |
as pre-coated rheinzink 08 sv50 |
27,9224 |
| 582150 |
ks aluminium 1.0 sv25 |
- |
| 582151 |
ks copper 06 sv25 |
17,3413 |
| 582152 |
ks copper 07 sv25 |
18,0761 |
| 582153 |
ks rheinzink 07 sv25 |
15,1369 |
| 582154 |
ks rheinzink 08 sv25 |
15,8717 |
| 582155 |
ks stainless steel 05 sv25 |
17,3413 |
| 582156 |
ks uginox 05 sv25 |
18,0761 |
| 582157 |
ks pre-coated rheinzink 08 sv25 |
17,3413 |
| 582170 |
ks aluminium 1.0 sv50 |
- |
| 582171 |
ks copper 06 sv50 |
30,1268 |
| 582172 |
ks copper 07 sv50 |
31,5964 |
| 582173 |
ks rheinzink 07 sv50 |
27,1876 |
| 582174 |
ks rheinzink 08 sv50 |
27,9224 |
| 582175 |
ks stainless steel 05 sv50 |
30,1268 |
| 582176 |
ks uginox 05 sv50 |
31,5964 |
| 582177 |
ks pre-coated rheinzink 08 sv50 |
30,1268 |
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These are gutter elements shielded with the sheet, vulcanised on one side. These articles are available in the two semicircular or rectangular shapes.
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| Strip for expansion joints - C, D |
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| code |
description |
(€) |
| 582300 |
c aluminium 1.0 |
42,6184 |
| 582301 |
c copper 06 |
44,0880 |
| 582302 |
c copper 07 |
47,0272 |
| 582303 |
c rheinzink 07 |
41,1488 |
| 582304 |
c rheinzink 08 |
42,6184 |
| 582305 |
c stainless steel 05 |
44,0880 |
| 582306 |
c uginox 05 |
45,5576 |
| 582307 |
c pre-coated rheinzink 08 |
47,0272 |
| 582350 |
d aluminium 1.0 |
45,5576 |
| 582351 |
d copper 06 |
52,9056 |
| 582352 |
d copper 07 |
55,8448 |
| 582353 |
d rheinzink 07 |
45,5576 |
| 582354 |
d rheinzink 08 |
47,0272 |
| 582355 |
d stainless steel 05 |
52,9056 |
| 582356 |
d uginox 05 |
55,8448 |
| 582357 |
d pre-coated rheinzink 08 |
54,3752 |
| 582400 |
s26 aluminium 1.0 |
45,5576 |
| 582401 |
s26 copper 06 |
49,9664 |
| 582402 |
s26 copper 07 |
52,9056 |
| 582403 |
s26 rheinzink 07 |
45,5576 |
| 582404 |
s26 rheinzink 08 |
47,0272 |
| 582405 |
s26 stainless steel 05 |
51,4360 |
| 582406 |
s26 uginox 05 |
52,9056 |
| 582407 |
s26 pre-coated rheinzink 08 |
52,9056 |
| 582430 |
s33 aluminium 1.0 |
49,9664 |
| 582431 |
s33 copper 06 |
54,3752 |
| 582433 |
s33 rheinzink 07 |
47,0272 |
| 582435 |
s33 stainless steel 05 |
55,8448 |
| 582436 |
s33 uginox 05 |
57,3144 |
| 582437 |
s33 pre-coated rheinzink 08 |
57,3144 |
| 582451 |
e copper 06 |
41,1488 |
| 582452 |
e copper 07 |
44,0880 |
| 582453 |
e rheinzink 07 |
37,4748 |
| 582454 |
e rheinzink 08 |
38,9444 |
These are expansion joint strips vulcanised on both sides, available in two different widths (Mod. C = 26 cm, Mod. D = 39 cm).
The C Model is mainly used for parapet and wall coverings, as well as in case of built-in gutters with special sizes (gutters for shed coverings).
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The D model with particularly large sheets for sticking is mainly used for covering expansion joints on roofs with bituminous layers or sheaths.
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| Head elements |
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| code |
description |
(€) |
| 582500 |
1t aluminium 1.0 (1mt) |
55,8448 |
| 582501 |
1t copper 06 (1mt) |
67,6016 |
| 582502 |
1t copper 07 (1mt) |
72,0104 |
| 582503 |
1t rheinzink 07 (1mt) |
54,3752 |
| 582504 |
1t rheinzink 08 (1mt) |
57,3144 |
| 582505 |
1t stainless steel 05 (1mt) |
66,1320 |
| 582506 |
1t uginox 05 (1mt) |
70,5408 |
| 582507 |
1t pre-coated rheinzink 08 (1mt) |
67,6016 |
| 582550 |
2t aluminium 1.0 (1,5mt) |
96,9936 |
| 582551 |
2t copper 06 (1,5mt) |
111,6896 |
| 582552 |
2t copper 07 (1,5mt) |
120,5072 |
| 582553 |
2t rheinzink 07 (1,5mt) |
91,1152 |
| 582554 |
2t rheinzink 08 (1,5mt) |
98,4632 |
| 582555 |
2t stainless steel 05 (1,5mt) |
110,2200 |
| 582556 |
2t uginox 05 (1,5mt) |
117,5680 |
| 582557 |
2t pre-coated rheinzink 08 (1,5mt) |
111,6896 |
| 582570 |
2t aluminium 1.0 (2mt) |
117,5680 |
| 582571 |
2t copper 06 (2mt) |
138,1424 |
| 582572 |
2t copper 07 (2mt) |
145,4904 |
| 582573 |
2t rheinzink 07 (2mt) |
113,1592 |
| 582574 |
2t rheinzink 08 (2mt) |
120,5072 |
| 582575 |
2t stainless steel 05 (2mt) |
132,2640 |
| 582576 |
2t uginox 05 (2mt) |
139,6120 |
| 582577 |
2t pre-coated rheinzink 08 (2mt) |
132,2640 |
Available with a width of 39 cm and in different lengths. They are mainly used for side flashings of flat roofs, for wall coverings and for small gutters.
Single-head elements must be at least 50 cm longer than the overall dimension of the flashing; for example, in the case of a flashing for wall covering 30 cm wide, you must use a single-head element 80 cm long.
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The double-head elements are mainly used for internally stuck gutters and for step building elements.
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| Notes |
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Prices are expressed in Euro. Unit price.
The indicated characteristics and prices are by way of indication and are not binding for Unimetal spa; the latter can make changes without further notice. Unimetal spa is always at customer's disposal to supply information and estimates on request. |
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