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Minimum 12 hours after gluing

1. HEAT WELDING FOR ROLLS

Leave a small gap (thickness of a credit card) between the sheets during the gluing process HEAT WELDING PROCESS:Heat welding is a three phases process after the flooring has been laid.

1 - A GROOVING OR ROUTINGFOR ISOPHONIC AND /OR FOAMBACKING PRODUCTSGroove all the Solid PVC layers until the fibreglass

For contract and Sport flooring , leave a gap of a badge or credit card(0.8 to 1 mm) between the strips, to allow the chamfering tool to be guided.

2 - HEAT WELDING

Note: Always practice on a scrap piece of material first to assure proper temperature and speed. Doing so will prevent failures.

Manual weld with a SPEED NOZZLE

Weld with welding robot (required on large project)

Use a Universal or Unifloor type Leister welder with electronical-ly controlled hot air burner air with special multiple fine jetsLinoleum Nozzle reference:ROMUS : 95253LEISTER : 103.394JANSER : 225 860 300

FOR HOMOGENEOUS AND COMPACT PRODUCTSGroovingGroove 2/3 of ALL the compact solid PVC layers

chamferAll solid PVC layers

Foam backing

2/3 of ALL the compact solid PVC layers

chamfer

ELECTRIC GROOVER / ROUTING MACHINEElectric grooving machine equipped with a 3,3 mm width circular plate

Use the Rapid Ultra nozzle, diameter 5 mm, air inlet 0.9 mm, Ref.: 224 800 007 from Janser or 95027 from ROMUS or the narrow nozzle on the automatic welder.

Narrow Nozzle

2 mm

ELECTRIC GROOVING

ChamferingWidth: 3.3 to 3.5 mm Depth: 1.5 to 1.8 mm

0.8 to 1 mm

GROOVING and ROUTING TOOLSMANUAL GROOVE-CUTTING

Triangular Scraper, Ref. : 95185 by ROMUS Linéa, Ref. : 95101 by ROMUS Master Turbo, Ref. : 95200 by ROMUS Swift groover Ref. : 262 611 400 by JANSER

Pro�l of a circulat saw blade

PVC Nozzle reference:ROMUS : 95254LEISTER : 105.407JANSER : 225 860 040

[501] TILES AND ROLLS WELDING (HEAT AND COLD WELDING)

IMPORTANT: The information in these documents is valid from: 01/12/2019 and we reserve the right to make changes without notice. The technology is constantly evolving, so before carrying out any work, our customers should contact us to check that this document is still valid.

3 - TRIMMING WELD RODTrimming must be done in two passes. Using a trimming tool sharpen in the middle only, such as the Mozart, is recommend:

Second stage:Second trim has to be done with the trimmer only. This method prevents concave welds and must be done when the rod is cold.

First stage:Has to be done with with the thickness guide.

Available from RomusRéf. : 95130

Spare blade:Réf. : 95129

4 - COVING WELDING

Tiles must be tight.Tiles must be hot welding as soon as they have a format more than 500 x 500 mm.For welding tiles, proceed as follows:• Chamfer, weld and trim all in the same way eg: crossway before starting again to groove, weld and trim on the other side.eg: lengthway.

This method avoid weld missing at the cross tiles.

3. HEAT WELDING FOR TILES

We recommand the use of the elbowed Rapid Ultra nozzle:

We recommand the use of a special trimmer for flash coving or site formed:

TRIMMER FOR FLASH COVING OR SITE FORMED

TOOLS GERFLOR PART N° ROMUS PART N°

Flash coving trimmer 0562 0001 95103

TOOLS JANSER PART N° ROMUS PART N°

Rapid Ultra nozzle 224 800 013 95028

2. HEAT WELDING THE WALL COVERING

FIXING LENGTHS Mural Ultra: Gap between lengths: 1 mm + 0.5 - 0 mm

TOOLS USE COMMENTS

CHAMFERING Ensures that joints are uniform. Eliminates traces of adhesive that prevent the welding rod from fusing

Triangular scraper Angle the triangular scraper so that each edge ischamfered separately and identically.Le chanfreinage peut nécessiter plusieurs passages. Chamfering may require several passes.

The recommended tools are available fromGERFLOR, ROMUS, JANSER or WOLFF

WELDING Hot Jet S orLeister Triac type fitted with a Rapid Ultra nozzle

CR 40 rod: Air gun: Hot Jets: position 4(80 l of air/ mn) Leister Triac:230 l of air / mnTemperature: 450 to 500°, position between 4 and 5

TRIMMING Slim levelling spatulaMozart levelling spatula1/4 moon cutter + cutting guide

A levelling spatula sharpened in the middle trim only the rod and avoids cutting the material

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FIXING LENGTHS Taradouche Mural: Gap between lengths: 1 mm + 0.5 - 0 mm

TOOLS USE

CHAMFERING Ensures that joints are uniform. Eliminates traces of adhesive that prevent the welding rod from fusing

Triangular scraper The thikness of this material requires each selvedgeto be chamfered separately with a triangular scraper

WELDING Hot Jet S type fitted with a Rapid Ultra nozzle

CR 41 rod.Hot air: position 4 (80 l of air/mn). Temperature: 450 to 500°, position between 4 and 5.

Leister Triac fitted with a special nozzle

Hot air: 230 l /mn. Temperature: position between 4 and 5.The nozzle should be cleaned after every weld.

MAKING FLUSH Slim or Mozart levelling spatula1/4 moon cutter + levelling guide

A levelling spatula sharpened in the middle trim only the rod and avoids cutting the material.

- You have a roll, find the corresponding welding rode - You have a welding rode, find the corresponding roll

4. WELDING RODE ON 3 CLICS - WWW.GERFLOR.COM

5. WELD REPAIR PROCEDURE

GAP BETWEEN THE ROLLS (without any dust or welding

rode on the edges)

SPACE GAP MAXI 2.5 MM(Use CR 40 to repair)

SPACE GAP BETWEEN 2.5 AND 3 MM

(Use CR 50 Delivery time 3 weeks

SPACE GAP BETWEEN 3 MM AND 4MM(Use CR 60 (Delivery time 3 weeks )

GAP MORE THAN 4 MM

PVC COMPACT Maxi 2,4 mm YES Special order

NOApply a piece of 10 to 15 cm width

Product thickness can’t accept a big diameter rode Apply a new piece of 10 to 15 cm

PVC ISOPHONICMaxi 3,6 mm YES Special order

YESSpecial order

CR50 CR 60

TYPE OF NOZZLE

ROMUS Ref. 95027Speed nozzle ULTRA CR 40/50

ROMUS Ref. 95250Automatic welding machine UNIFLOOR

ROMUS Ref. 95131 Welding roller

TRIMMING ROOLS

ROMUS Ref. 95130 ROMUS Ref. 95140 and 95155 ROMUS Ref. 95150

For a CR 60 welding rode, please control the gap between the welding rode guide and the

nozzle. It can be adjust.

[501] TILES AND ROLLS WELDING (HEAT AND COLD WELDING)

1 - TECHNICAL SPECIFICATION- Cold weld is a heat free welding system suitable for foam backed floorcoverings.- Cold weld is colourless and can be used on all colours of the material.

2 - CONDITIONNINGSG 916 is packed:- 1 x 500 ml cannister of cold welding liquid- 1 x measuring cup- 2 feed nozzle for floorcoverings- 3 rolls of 50 ml adhesive paper- A cartridge - 300 ml

Cold welding type T is delivered in kit including: Ref.: 95607 from ROMUS- semi-pasty product,- guide nozzle in the shape of «T»,- Tube 44 g,- Autonomy: approx. 50 ml.

6. COLD WELD (MAY BE USED AFTER ONLY 2 TO 4 HOURS AFTER LAYING)

ONLY FOR ACOUSTIC PRODUCT - NOT FOR HOMOGENEOUS PRODUCT

3rd case: Total repair when the gap is more than 4 mm• In this case, cut the flooring on a minimum width of 15 cm (7.5 cm on either side of

the weld) and replace it.• After drying of the subfloor, as required, ensure that the edges of the current flooring

are bonded.• The replacement strip should be cut so as to leave a space of 1 mm on each side, to

allow for performance of the weld.

REPAIR PROCEDURE WITH A WELDING RODE CR40 / CR50 / CR 60 (see topic)

1st case: Repair on the entire welding length• Remove the cord, manually, or with a hooked blade (ref. 262 010 200 and 262 036 500), by

cutting the cord on each side, and using a ruler as required.• Clean the joint by sucking up the dirt and by using a triangular scraper ), so as to remove

all possible traces of adhesive.• Weld with a welding gun equipped with a speed nozzle as per the indications provided in

the previous chapters.PS: The edge of the old flooring should be cleaned with a small metallic brush and a thin-ning agent before welding.

2nd case: Occasional repair (in the middle of a weld) • Remove the cord on the area to be repaired as before.• Clean the joint by sucking up the dirt and by using a triangular scraper.• Weld with a welding gun equipped with a speed nozzle as per the indications provided in

the previous chapters by starting with the already welded cord and ending with the same (approximately 5 cm).

PS: The edge of the old flooring should be cleaned with a small metallic brush and a thinning agent before welding.

Weld cord

2,5 mm < Space Gap < 4 mm

5 cm

New weld linear

Begenning or endof the weld

Existing weld

Only for Textile backing

Space gap 1 mm maxi

PVC strip

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1 - Overlap cut 2 - Apply masking tape 3 - Cut throught the masking tape to excess

4 - Inject the solution deeply and tape

5 - Leave to dry 60 seconds 6 - Pull o� the masking tape

1 - Overlap cut 2 - Apply masking tape 3 - Cut throught the masking tape to excess

4 - Inject the solution deeply and tape

5 - Leave to dry 60 seconds 6 - Pull o� the masking tape

OR

WARNING: Do not smoke or allow a naked flame near to the installation. Cold weld contains a flammable solvent.

3 - INSTRUCTIONS FOR USE• For thin floorcoverings (cold processing)- Apply 3 mm widthof welding liquid to joint - no need for protec-

tive paper- Apply using backward motion drawing the hand smoothly over

the entire length of the joint• For thick floorcoverings (cold weld)- Lay the flooring such that the edges overlap by 3-4 cm, then cut

through both thicknesses to ensure an accurate butt joint.- Allow the joint to relax for 2-4 hours, then follow the instructions

given in the diagrams.This technique ensures an excellent standard of finish without anyapparent joint.It is imperative to allow the flooring to fully cure for 24 hoursprior to the floor being put into service.

[501] TILES AND ROLLS WELDING (HEAT AND COLD WELDING)