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HL-Door Seal - Threshold Seal

HL-Door Seal  - Threshold Seal
Product Code: SE500
Availability: Estimated 1 -3 working days
Price: £42.12

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Threshold Plate:

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HL-Door Seal (PART CODE SE500)

  • AS-Threshold Strip (PART CODE SE490)
  • Applications: surface mounted internal door thresholds
  • Reductions of 12dB can be achieved when used with appropriate head and jamb seals
  • Supplied in 1000mm lengths as standard (2m lengths available on request)
  • All fixings supplied

Fitting Instructions for HL & MHL Threshold Seals

acoustic seal

HL Threshold

The HL threshold seal comprises an HL aluminium sealholder and an HLA elastomeric insert. An HT MHT or AS aluminium threshold strip is also available separately. Fig 1.

HL is normally used on the outside of exterior door thresholds, but only where there is a water bar if rain ingress is likely.

The seal is in two parts: (a) on the door an adjustable sealholder, HL, containing an elastomeric seal, HLA, which seals on (b) an aluminium threshold strip, HT or AS. Fig.2.

The seal, which is fixed to the front of the inward opening door, has to clear the water bar, so the aluminium threshold strip is raised on a timber batten. The height of the water bar should be checked on site and the batten prepared accordingly.

Fitting

Measure the distance between the stops, or to the stop seals if these are fitted, in which case the door must be closed.
Cut the batten, threshold strip and sealholder to this length.
Make two drainage grooves on the underside of the batten.
Screw the batten in place. Do not bed in mastic.
Screw aluminium strip onto the batten ensuring that it is flat
Trim insert to fit. Push it down into the holder, kneading it until it is as flat as possible.
Place holder on closed door, seal resting under slight compression on the threshold strip. Mark screw hole positions.
Extrude a fine bead of waterproof sealant on the back face of the sealholder.
Test that the insert is sealing properly. If slight adjustment is needed this is provided for by means of oversized screw holes.

Alternative Positions

HL may be fitted as a draught seal on external doors or the inside of outward opening doors. In either case a batten as described above is not necessary.

Soundproofing

This seal can also be used for effective soundproofing on the threshold in conjunction with a suitable stop seal. Fig.3.

MHL Internal Threshold Seal

The MHL threshold seal comprises MHL aluminium sealholder, MHA rubber seal insert and MHT aluminium threshold strip. MHL is only recommended for internal doors and is fitted in the same manner as the HL seal described above.

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