Renovation openings / Custom B2B supply
Keep exposed window openings covered between removal and replacement. DERFLEX supplies clear PVC materials and custom tarp panels for contractors, enclosure fabricators and project distributors. Define daylight needs, finished dimensions, exposure and fixing details to develop a practical temporary window cover.
Temporary window tarps are flexible panels used to cover building openings while glazing or frames are being replaced. Clear panels preserve daylight; reinforced or opaque constructions address different visibility and handling needs. The panel, perimeter fixing and water-shedding details must work together. A tarp is a temporary weather barrier, not permanent glazing or a structural window system.
01 / Match the opening
The first decision is what the occupied space or work area needs from the covered opening. Thickness alone cannot settle that choice.
A / CLEAR FIELD
Flexible clear PVC, also called clear vinyl, suits a temporary window panel where people need to see through the opening. Keep the viewing area separate from reinforced attachment zones.
Specify acceptable haze, tint and weld location against a sample. See the clear PVC material options.
B / REINFORCED FIELD
A reinforced transparent construction is worth discussing when the sheet needs reinforcement and uninterrupted visibility is less important. The grid remains visible; assess actual daylight and appearance with a material sample.
Identify scrim construction and seam layout rather than ordering by the word “clear” alone.
C / OPAQUE FIELD
Opaque PVC-coated polyester can close the view into a renovation zone. It also blocks the outlook and reduces daylight, which may affect work lighting and the occupied interior.
Compare PVC-coated tarpaulin construction when the priority is a reinforced opaque panel.
Panel size does not define a wind rating. Record opening dimensions, building elevation, exposure duration and the supporting structure. Larger or exposed openings need a project-specific fixing and support design; a heavier sheet does not validate that assembly.
02 / Turn a survey into a panel drawing
Measure the opening and the usable fixing area separately. State whether your dimensions describe the aperture, the finished outside edge or the fixing centres. Avoid a size list that leaves the fabricator to guess.
Record aperture width and height at several points, reveal depth, available perimeter, obstructions and the proposed mounting face. Mark sharp edges and areas that cannot be drilled or bonded.
Set a separate allowance for each edge. The head, jambs and sill may need different details; do not apply one universal overlap to every opening.
Show hem or band widths, hardware centres and edge offsets. Identify any viewing area that must remain free of seams or reinforcement.
Give each panel a floor, elevation and opening ID. Group identical panels only after the survey confirms that dimensions and fixing details match.
These relationships apply to the stated outside dimensions. Welding, folding and pocket construction require separate fabrication allowances; do not add them again to a finished-size order.
03 / Define what will be supplied
DERFLEX supports material sourcing and custom tarp fabrication. Your purchase specification should distinguish the sheet from the finished panel and the building-side installation.
| Item | Put in the enquiry | Resolve before production |
|---|---|---|
| Supply format | Roll material, cut blank or finished panel; quantity by format | Who cuts, welds, adds reinforcement and fits hardware |
| Material | Clear PVC, reinforced transparent direction or opaque coated polyester | Approved material reference, clarity, colour and outdoor formulation |
| Thickness / mass | Requested nominal thickness in mm or mil; GSM where relevant | Selected construction and tolerance; do not infer thickness from GSM |
| Dimensions | Outside finished W × H in mm; opening ID and drawing revision | Dimensional tolerance, measuring condition and any shaped corners |
| Perimeter | Hem or band, corner patches, edge offsets and attachment method | Reinforcement width, hardware layout and compatibility with site fixings |
| Seams / access | Preferred seam positions; any removable or opening section | Fabrication feasibility, water-shedding detail and operation of the access area |
| Exposure / documents | Climate, duration, minimum handling temperature and required reports | Evidence for the selected grade; installation design evaluated separately |
| Packing / phasing | Opening labels, packing sequence, destination and required dates | Agreed marking and packing plan; commercial terms in the quotation |
Read the table by swiping horizontally on a small screen. 1 mil = 0.0254 mm; for example, 20 mil = 0.508 mm. This conversion is not a recommended grade or a stock-panel specification.
For multiple sizes or repeat supply, use the custom tarp manufacturing options to define a consistent material, edge detail and order reference.
04 / Where the panel meets the building
A waterproof face material can still leave an opening exposed at the head, fasteners or sill. Review these interfaces with the project installer before releasing a drawing.
Show how water coming down the façade is directed over the temporary cover and away from the opening. A loose top edge can admit water behind an otherwise waterproof panel.
Coordinate the reinforced edge with the actual support and anchor positions. Choose between a designed clamping detail and individual attachment points; neither should rely on unsupported clear film.
Identify where water exits at the bottom. Avoid folds or pockets that collect runoff, discharge into the interior or obstruct the existing drainage path.
Account for flapping, thermal movement and rubbing at frame edges. Large clear fields may need an intermediate support arrangement determined for the opening.
Grommet spacing must match the supported edge and fixing plan. See reinforced hems and grommet layout considerations; a regular retail eyelet pattern is not an engineered anchorage design.
05 / Materials in context
These photographs show material and construction-cover references from DERFLEX. They do not represent a completed temporary window installation or establish the performance of a proposed panel.
For larger façade or work-zone coverage, compare construction tarp supply. A single window-opening panel has different sizing and interface requirements from a continuous building enclosure.
06 / Before you order
For a window replacement programme, the cover may be removed and refitted several times. Include handling frequency, storage and access in the brief, alongside weather exposure.
Identify any opening used for escape, access or ventilation. Have the site team decide how those functions remain available. A clear panel provides visibility, not an open ventilation path.
Do not treat a flexible tarp as impact-resistant glazing, security boarding, a fall barrier or approved hazardous-dust containment. Specify any separate protection the project requires.
Request the selected grade's relevant cold-flex, outdoor-exposure or flame-test evidence where required. A flame-retardant material is not a fire-rated window assembly. For heated work zones, review the winter enclosure selection notes.
Check attachment areas, welds and abrasion zones after installation and adverse weather. Avoid sharp folds in cold material; clean and dry panels before packing. Agree repair or replacement criteria with the site team.
07 / Prepare a useful enquiry
DERFLEX can review a sketch, application photographs and quantities as a starting point. A completed panel schedule makes it easier to compare material and fabrication proposals on the same basis.
Price depends on material construction, usable width, panel yield, seam length, reinforcement, hardware, order mix and packing. MOQ, lead time and delivery terms are confirmed in the project quotation.
Related questions
A clear tarp can provide temporary weather coverage while preserving daylight, if the material, supported perimeter and water-shedding detail suit the opening. It does not replace permanent glazing. Agree the fixing arrangement, exposure limits and inspection plan before use.
There is no universal thickness. Opening size, support, exposure, handling temperature and the number of installation cycles all matter. Compare samples and the relevant material data, then approve the finished construction. Increasing thickness alone does not establish wind resistance or attachment strength.
Provide both and label them clearly. The finished panel generally needs agreed edge allowances beyond the aperture for its fixing and weather detail. State the outside finished dimensions, rather than leaving overlap or fabrication deductions to assumption.
A reinforced panel includes a visible grid, which interrupts the view. Plain clear PVC is the route to discuss when uninterrupted visibility matters. Reinforcement, haze, tint and seam appearance should be assessed on the proposed material, not inferred from a small product photograph.
A continuous PVC sheet can block water through the material, but rain can still enter at the perimeter or other openings. Closing an aperture can reduce direct drafts; it does not establish a thermal insulation value. Heating and condensation requirements need separate consideration.
DERFLEX offers clear PVC material and custom tarp fabrication directions. Specify whether you need roll goods, cut blanks or panels with agreed reinforced edges and hardware. Provide the opening schedule and drawings so the proposed construction, scope, sample requirements and commercial terms can be confirmed.
From opening survey to agreed panel
Share your opening sizes, daylight requirements and fixing concept. Start the conversation with a drawing, a photograph or a panel schedule.
Materials · Cut panels · Custom finished tarps