Tilt mount
Front and rear leg kits that set panels at 5°, 10° or 20° on flat and low-pitch roofs.
Tilt mount: front and rear legs set the rail and module at 5°, 10° or 20° above the roof.
- Anodised as standard
- 10 µm
- Every aluminium part is AL6005-T5, anodised to 10 µm as standard, not mill finish. Fasteners are SUS304 stainless steel.
- Panel tilt
- 5°, 10°, 20°
- Rear leg kits LMS-ARL5, ARL10 and ARL20
- Roof pitch
- 0° to 30°
- Roof slopes the tilt manuals cover
- Interface spacing
- 1.5 m
- Where roof tilt plus panel tilt is 5° or less, wind region A or B
- Warranty
- 20 years
- Aluminium and SUS304 parts, C1 to C4
Where it fits
For flat and low-pitch metal roofs and concrete flat roofs, where the panels need more angle than the roof gives. Penetrative and non-penetrative fixings.
IBR and corrugated
LS-RP-01IBR side-fix tilt support kit (LMS-IBR3-KIT, L100) with EPDM seal.
Klip-Lok / Saflok 410 and 700
LS-RP-02Saflok 410/700 cleat (LMS-KL1-KIT) or Saflok mini-rail tilt kit (LMS-KL2-MR-TILT-KIT). No roof penetration.
Concrete flat roofs
LS-RP-10Commercial tilt kits (LMS-COBE-FL-10-KIT, LMS-COBE-RL-10-KIT, LMS-COBE-EW-KIT), fixed with chemical anchors or expansion bolts.
Wooden purlins
LS-RP-06Hanger bolt and L-bracket kit for wooden purlins (LMS-HB-LB-KIT).
Novotexi 440
LS-RP-0520° tilt on Novotexi 440 roof sheeting.
What is in the kit
Choose the tilt angle. The model and the rear leg kit change with it. Select any part for its material and finish.
| Item | Description | Code |
|---|---|---|
| 1 | LMS-EC30-35-KIT-BP | |
| 2 | LMS-IC30-35-KIT-BP | |
| 3 | LMS-PRO-RAIL47 | |
| 4 | LMS-ARL5-KIT | |
| 5 | LMS-FL-KIT | |
| 6 | LMS-PRO-RAIL47-SP-KIT |
Select a part, in the list or in the model, for its code, material and finish.
A representative model for reading the assembly, not a design drawing. PV modules are shown for reference and are not part of the kit. Quantities are set for each project.
Configurations
Three tilt angles, set by the rear leg kit on the same front leg, rail and clamps.
Front and rear legs at 5°
- Roof
- IBR, corrugated sheeting or wooden purlins
- Fixing
- Penetrative: bases screwed to the purlins
- Interface
- Rear leg kit, 5°LMS-ARL5-KIT
- Rail
- PRO Rail 47
- Full spacing
- 1.5 m only where roof tilt plus panel tilt is 5° or less: on a flat roof
With the front leg kit LMS-FL-KIT. The same legs go on Klip-Lok / Saflok rib clamps (non-penetrative) and, with chemical anchors or expansion bolts, on concrete flat roofs.
Front and rear legs at 10°
- Roof
- IBR, corrugated sheeting or wooden purlins
- Fixing
- Penetrative: bases screwed to the purlins
- Interface
- Rear leg kit, 10°LMS-ARL10-KIT
- Rail
- PRO Rail 47
- Full spacing
- At 10° the roof tilt plus panel tilt is over 5°, so the spacing is reduced: confirm it with Lumasol
With the front leg kit LMS-FL-KIT. The same legs go on Klip-Lok / Saflok rib clamps (non-penetrative) and, with chemical anchors or expansion bolts, on concrete flat roofs.
Front and rear legs at 20°
- Roof
- IBR, corrugated sheeting or wooden purlins
- Fixing
- Penetrative: bases screwed to the purlins
- Interface
- Rear leg kit, 20°LMS-ARL20-KIT
- Rail
- PRO Rail 47
- Full spacing
- At 20° the roof tilt plus panel tilt is over 5°, so the spacing is reduced: confirm it with Lumasol
With the front leg kit LMS-FL-KIT. The same legs go on Klip-Lok / Saflok rib clamps (non-penetrative) and, with chemical anchors or expansion bolts, on concrete flat roofs.
More in this family
E/W ballast system
20° landscape tilt on Novotexi 440
Inclined weighted ballast
For concrete flat roofs: the array is held by weighted ballast, without penetrating the roof surface. See Weighted ballast, below.
Introducing the Lumasol Inclined Weighted Ballast Mounting SystemThe video loads from YouTube, which sets its own cookies. Cardwell bracket inclined system
Universal Cardwell brackets bridge two IBR ridges, so panels on a south-facing slope can be inclined 10° to the north without full-length rail across the span.
Tripod kits, 10° and landscape
Two per panel, in landscape at a 10° incline, used with L-bracket full rail on roofs with obstructions.
Weighted ballast
For flat roofs where a penetration is not an option, in east-west and inclined versions. East-west carries a lower wind load, so it needs fewer and lighter blocks.
- Each structure is mechanically bolted to individual concrete blocks, two bolts per block.
- The blocks sit on anti-wear EPDM mats, which protect the roof membrane and keep drainage open.
- The ballast mass for each panel is set from site-specific wind simulations by Lumasol's engineers.
- The blocks are reinforced with internal mesh, and the system carries integrated wind-safety gust lines.
Specification
From the Lumasol installation manual and product catalogue. Each system is designed for its project and ships with a detailed installation guide.
Compare tilt mount with the other kit families| Materials | AL6005-T5 aluminium legs, PRO Rail 47, splices and supports. SUS304 stainless hardware. |
|---|---|
| Finish | Aluminium anodised to 10 µm. Splice star washers bond the rails. |
| Design basis | Wind regions A to D (32 to 44 m/s, 50-year recurrence). Assessed for terrain categories C and D, up to 20 m installation height.Non-penetrative system calculated to SANS 10160-3:2019 for roof zone A. |
| Roof pitch and tilt | Roof slopes 0° to 30°. Rear leg kits set the panels at 5°, 10° or 20°. |
| Corrosion class | Anodised aluminium and SUS304 stainless steel: 20 years in C1 to C3 and in C4, not warranted in C5. Screws (1022A, class 3): 20 years in C1 to C3.Reduce interface spacing by 5% in C4 and 25% in C5. |
| Interface spacing | Up to 1.5 m.Roof height to 15 m, roof tilt plus panel tilt to 5°, roof zone A, terrain category D, wind region A or B, clamp pull-out at least 3.5 kN. Otherwise reduced. |
| Modules | 30 mm and 35 mm frames, at least 20 mm between modules. |
| Fastening | Legs, splices, clamps and rail nuts 16 to 20 N·m.Penetrative bases screw into metal or timber purlins 0.42 to 2.4 mm thick over EPDM. Concrete roofs: chemical anchors or expansion bolts to the anchor datasheet. |
Materials and corrosion by site
- Front and rear legs, PRO Rail 47, splices and supports: AL6005-T5 aluminium, anodised to 10 µm.
- Bolts and splice hardware: SUS304 stainless steel.
- Penetrative bases sit on EPDM rubber and screw to the purlins with waterproof washers.
- Splice star washers pierce the anodising to bond the rails; clamp bonding pins and earthing clips bond the module frames.
- Anchors for concrete roofs and earthing cable are not in the Lumasol component list.
| Site class | Aluminium and SUS304 parts | Screws (1022A, class 3) | EPDM and other non-metallic parts | Interface spacing |
|---|---|---|---|---|
| C1 to C3Inland | 20 years | 20 years | 3 years | As designed, up to 1.5 m |
| C4Coastal or industrial | 20 years | Not warranted | 3 years | Reduce by 5% |
| C5Severe | Not warranted | Not warranted | 3 years | Reduce by 25% (both tilt manuals) |
- Classes to ISO 9223. Warranty from delivery, with the product registered within 30 days of purchase.
- Where a site's class is uncertain, treat it as the higher class and confirm it with Lumasol.
Spacing and design basis
The conditions both tilt manuals set for the full 1.5 m interface spacing. They are the same for both fixings.
| Condition | Penetrative (bases on purlins) | Non-penetrative (Saflok / Klip-Lok) |
|---|---|---|
| Maximum interface spacing | 1.5 m | 1.5 m |
| Roof height | Up to 15 m | Up to 15 m |
| Roof tilt plus panel tilt | Up to 5° | Up to 5° |
| Roof zone | Zone A | Zone A |
| Terrain category | D | D |
| Wind region | A or B (up to 36 m/s) | A or B (up to 36 m/s) |
| Clamp pull-out | At least 3.5 kN | At least 3.5 kN, on accredited sheets |
| C4 site | Reduce spacing by 5% | Reduce spacing by 5% |
| C5 site | Reduce spacing by 25% | Reduce spacing by 25% |
| Rail end overhang | Up to 40% of the last span | Up to 40% of the last span |
- Both systems suit roof slopes from 0° to 30°, with guidance up to 20 m installation height; above 20 m a project-specific engineering certificate is needed.
- Any installation outside these limits needs reduced spacing. Confirm it with Lumasol before installing.
- The non-penetrative clamp is accredited on Saflok 700, Saflok 410 and Lysaght Klip-Lok 305; on any other sheet, test pull-out on site.
Installation
The sequence from the Lumasol manual, for the 5° rear legs. The manual is the reference on site.
Step 1: Plan the layout
- Confirm the wind region, terrain category, ISO 9223 class, roof height and slope (0° to 30°).
- Allow at least 20 mm between modules for the inter clamps; set the brackets about ½ to ¾ of the module height apart.
- Take the clamping zone from the module manufacturer's manual, allowing for the design angle and the purlin spacing.
Step 2: Fix the bases
- Screw each tilt base to the metal or wooden purlin beneath the sheeting: through the holes on both sides, or through the centre hole with EPDM rubber under the base.
- Self-tapping screws with waterproof washers: 3/8" hex socket, no more than 300 RPM, square to the surface, neither over- nor under-tightened. Purlins 0.42 to 2.4 mm thick.
- Set the bases out in a straight line. On a concrete flat roof, use chemical anchors or expansion bolts to their own datasheet.
Step 3: Fit the legs
- Position and align the front and rear legs in the direction the installation plan shows.
- Leave the fasteners loose until the angle is set, then tighten to 16 to 20 N·m.
Step 4: Fit the rails
- Fix the rails to the legs with the rail nut kits at 16 to 20 N·m, the rail grooves meshing with the leg grooves.
- Join rails with the splice within ¼ span of a support, never over a support or at mid-span, at 16 to 20 N·m. The star washers bond the rails.
- Every rail sits on at least two supports.
Step 5: Clamp the modules
- Fix the first module with an end clamp, lightly. Lift it slightly, slide in mid clamps with earthing clips, then place the next module.
- Earthing clips are single use. Tighten every clamp to 16 to 20 N·m once the modules are in their final position.
| Fixing | Codes | Torque |
|---|---|---|
| End and mid clamps | LMS-EC30-35-KIT-BP, LMS-IC30-35-KIT-BP | 16 to 20 N·m |
| Rail splice | LMS-PRO-RAIL47-SP-KIT | 16 to 20 N·m |
| Tilt splice kit | LMS-TILT-SPLICE-KIT | 16 to 20 N·m |
| Front and rear leg kits | LMS-FL-KIT, LMS-ARL5/10/20-KIT | 16 to 20 N·m |
| Rail to legs, rail nut kits | LMS-RN-M8x20-KIT | 16 to 20 N·m |
Stainless fasteners can gall. Apply force evenly along the thread, use power tools at low speed, and avoid impact drivers.
Tools
- Screwdriver
- Drill bits for M8 bolts
- Torque spanner
- 5 m tape
- Marker pen
- String line
Tilt mount or flush mount
The nearest kit in the range, side by side, from the two manuals.
Flush mount specifications| Feature | Tilt mount | Flush mount |
|---|---|---|
| Panel angle | 5°, 10° or 20° above the roof, set by the rear leg kit | Parallel to the roof |
| Roofs | IBR and corrugated, Klip-Lok / Saflok, concrete flat roofs, wooden purlins, Novotexi 440 | IBR, Klip-Lok / Saflok, corrugated, standing seam, Novotexi 440 |
| Full 1.5 m spacing | Roof tilt plus panel tilt up to 5°, wind region A or B | Roof tilt up to 18° (penetrative) or 10° (non-penetrative) |
| Roof height for full spacing | Up to 15 m | Up to 20 m |
| Clamp pull-out for full spacing | At least 3.5 kN | At least 2.5 kN |
| Rail | PRO Rail 47 | PRO Rail H, or Rail 47 on L-brackets |
| Choose it when | The roof is flat or low-pitch and the panels need more angle than it gives | The roof's own pitch and direction suit the array |
Technical questions
Which tilt angles are available?
Rear leg kits are made for 5°, 10° and 20° (LMS-ARL5-KIT, LMS-ARL10-KIT, LMS-ARL20-KIT), used with the front leg kit LMS-FL-KIT.
What roof slopes do the tilt kits suit?
Roof slopes from 0° to 30°. The full 1.5 m interface spacing applies only where roof tilt plus panel tilt is 5° or less.
When can tilt kits be spaced at 1.5 m?
Roof height up to 15 m, roof tilt plus panel tilt up to 5°, roof zone A, terrain category D, roof clamp pull-out of at least 3.5 kN, and wind region A or B (up to 36 m/s). Any installation outside these limits needs reduced spacing.
Is there a non-penetrative tilt option?
Yes. It uses the Saflok 410/700 cleat, the Saflok mini-rail tilt kit or the standing seam clamp kit. The clamp is accredited only on Saflok 700, Saflok 410 and Lysaght Klip-Lok 305 (standing seam); for other sheets an on-site pull-out test is recommended.
Can the tilt legs go on a flat concrete roof?
Yes. Chemical anchors or expansion bolts may be required. Hole diameter, depth, curing time and tightening torque come from the anchor or bolt product datasheet.
How is the penetrative tilt base fixed?
With self-tapping screws into the metal or wooden purlins beneath the sheeting, through the holes on both sides of the base or through the centre hole, with EPDM rubber under the base. Purlin thickness must be 0.42 to 2.4 mm. Use a 3/8" hex socket at no more than 300 RPM.
Projects on this kit
All projects
| Project | Site type | Province or country | System size |
|---|---|---|---|
| Stewarts & Lloyds | Rooftop | KwaZulu-Natal | 321 kWp |
| Boxer Jozini | Rooftop | KwaZulu-Natal | 231 kWp |
| Village Baker, Eswatini | Rooftop | Eswatini | 215.6 kWp |
| Toyota | Rooftop | Not published | Not published |
| Kombat | Rooftop | Not published | Not published |
| Residential rooftop, new home | Rooftop (residential) | Not published | Not published |
Quote a tilt mount kit
Send the roof or site, the system size and a layout if you have one. The quote request opens with tilt mount selected.