Magnetic Shield Sheet

Magnetic Shield Sheet: Magnetic Field Shielding

Reduce low-frequency magnetic field exposure from breaker panels, smart meters, appliances, and high-current wiring with Magnetic Shield Sheets, a professional-grade shielding material for homes, offices, and vehicles.

Magnetic fields are among the hardest EMFs to shield. Shielding paints and fabrics don’t block magnetic fields at all, and a single sheet of ordinary metal offers limited reduction on its own. Effective magnetic field shielding takes a specialized material that combines multiple metals. Each Magnetic Shield Sheet is a thin, rigid laminated panel with several shielding materials fused inside, so it works far better than a single metal while staying lightweight and easy to handle. The sheet size suits most targeted installs with minimal cutting, making it practical for both DIY homeowners and professional installers.

Key Features

• Multi-layer laminated construction for effective magnetic field reduction
• Only 0.5 mm thick, so it fits behind drywall, under subfloors, or behind furniture
• Lightweight and easy to cut for targeted “hotspot” shielding
• Built-in conductive corner strip, so it can be grounded to reduce electric fields too
• Suitable for new construction, renovations, RVs, vans, and electric vehicles

Common Applications

• Behind breaker panels and subpanels. These are a frequent source of elevated magnetic fields in bedrooms, offices, or living spaces that share a wall with the panel.
• Behind smart meters. Especially useful when the meter is mounted on an exterior wall behind a bed or desk.
• Behind refrigerators and large appliances. Helpful when the appliance shares a wall with a sleeping or sitting area.
• Under flooring. Use it for localized hotspots from feeder cables, conduit runs, or high-amperage circuits that can’t be relocated.
• RVs, vans, and EVs. Place it near battery packs, inverters, and wiring runs close to seating or sleeping areas.
• Behind wall art, bookshelves, or furniture. It shields a problem area with no visible change to the room.

For Building Biologists and EMF Professionals

Magnetic Shield Sheets are well suited to targeted mitigation where a field source can’t be eliminated, rerouted, or distanced. Layer count and coverage area can be adjusted on site based on meter readings. In practice, extending the coverage area is sometimes more effective than adding layers. Stagger seams between layers for even coverage, and bond the integrated conductive strip to the grounding system when electric field reduction is also required. We recommend spot treatment rather than full-room coverage to avoid distorting the natural geomagnetic field.

Installation Guidance

Measure the magnetic field with a TriField TF2 meter on the Standard MAG setting before, during, and after installation. This confirms the source, guides placement, and tells you how many layers you need. Lighter fields may need only one layer; stronger fields may need 2–3.

• Overlap adjoining sheets by at least 1 inch for continuous coverage.
• When using multiple layers, stagger the overlaps so the seams don’t line up.
• Attach the sheets with wood screws, staples, or a suitable adhesive (see FAQ).

Tools needed: wood screws, power drill and bit, measuring tape, marker, metal-cutting tool (tin snips work well), and a TriField TF2 meter. On suitable substrates, an electric stapler or nailer can be used: a mid-range electric stapler works for one layer, while two or more layers need a professional-grade nailer.

⚠️ Safety Note: Sharp Edges After Cutting. Cut edges are very sharp. Plan your layout ahead of time to minimize cutting, and tape all cut edges (duct tape works well) before handling or installing.

Specifications

• Sheet size: 80 cm x 55 cm (31.5" x 21.65")
• Coverage per sheet: approx. 0.44 m² (4.74 sq ft)
• Thickness: 0.5 mm (0.7 mm at overlaps)
• Construction: multi-layer laminated shielding film with integrated conductive grounding strip

Returns: Unused, uncut sheets in their original condition may be returned within 30 days of delivery. Return shipping is the customer’s responsibility unless the order arrived damaged or incorrect.

Frequently Asked Questions

How many layers do I need?
It depends on the strength of the field. Test with a TriField TF2 meter on the Standard MAG setting before installation, use it during installation to fine-tune placement, and test again afterward to confirm the reduction. Lighter fields may need one layer; stronger fields may need 2–3. Sometimes a wider coverage area works better than additional layers.

Can I install it behind drywall?
Yes, this is one of the most common applications. Attach the sheets over the studs, then hang drywall as usual. With multiple layers, you may need thinner drywall in the shielded area so the wall finishes flush.

Can I install it under flooring?
Yes. Screw the sheets to the subfloor using the same overlap guidelines. With multiple layers, a thinner underlayment in the shielded area can keep the finished floor height consistent.

Should I shield an entire floor?
We recommend spot treatment only where needed, since large areas of this material can dampen the natural earth (geomagnetic) field in the room.

Does it also block electric fields?
Yes, when properly grounded to your home’s grounding conductor. Each sheet has a built-in conductive strip in one corner for easy connection to grounding tape or wire. If it isn’t grounded, it reduces magnetic fields only.

Can I use adhesive instead of screws or staples?
Yes, on suitable substrates. Because of the laminate surface, use an acrylate-based adhesive rated for this type of material. Work in small sections with wet adhesive, since it bonds immediately once dry and can’t be repositioned.

Do I need a professional installer?
Many customers handle small, targeted installs themselves, such as behind a breaker panel or appliance. For larger projects spanning multiple rooms, or installs based on a shielding plan, we recommend working with your building biologist or EMF professional.