- \n
- Building Regulations, Technical Guidance Document C (2023 Amendment).<\/li>\n<\/ul>\n<\/div>\n<\/div>\n
[\/vc_column_text][vc_column_text]<\/p>\n
- \n
- For detailed guidance, refer to the full technical document available to download here<\/a><\/strong>.<\/li>\n<\/ul>\n
[\/vc_column_text][\/vc_column][vc_column width=”1\/6″ rt_wrp_col_paddings=”false” rt_border_top=”” rt_border_bottom=”” rt_border_left=”” rt_border_right=”” rt_border_top_mobile=”” rt_border_bottom_mobile=”” rt_border_left_mobile=”” rt_border_right_mobile=”” rt_bg_image_repeat=”repeat” rt_bg_size=”auto auto” rt_bg_position=”right top” rt_bg_attachment=”scroll”][vc_single_image image=”35619″ img_size=”150×90″ style=”vc_box_outline”][\/vc_column][\/vc_row][vc_row rt_row_background_width=”default” rt_row_style=”default-style” rt_row_borders=”” rt_row_paddings=”true” rt_bg_effect=”classic” rt_bg_image_repeat=”repeat” rt_bg_size=”cover” rt_bg_position=”right top” rt_bg_attachment=”scroll” rt_bg_video_format=”self-hosted” rt_padding_top=”10″][vc_column rt_wrp_col_paddings=”false” rt_border_top=”” rt_border_bottom=”” rt_border_left=”” rt_border_right=”” rt_border_top_mobile=”” rt_border_bottom_mobile=”” rt_border_left_mobile=”” rt_border_right_mobile=”” rt_bg_image_repeat=”repeat” rt_bg_size=”auto auto” rt_bg_position=”right top” rt_bg_attachment=”scroll”][vc_separator style=”style-4″][vc_column_text]<\/p>\n
Technical Guidance Document C: Site Preparation and Resistance to Moisture<\/span><\/span><\/h5>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row rt_row_background_width=”default” rt_row_style=”default-style” rt_row_borders=”” rt_row_paddings=”true” rt_bg_effect=”classic” rt_bg_image_repeat=”repeat” rt_bg_size=”cover” rt_bg_position=”right top” rt_bg_attachment=”scroll” rt_bg_video_format=”self-hosted” rt_padding_top=”10″][vc_column rt_wrp_col_paddings=”false” rt_border_top=”” rt_border_bottom=”” rt_border_left=”” rt_border_right=”” rt_border_top_mobile=”” rt_border_bottom_mobile=”” rt_border_left_mobile=”” rt_border_right_mobile=”” rt_bg_image_repeat=”repeat” rt_bg_size=”auto auto” rt_bg_position=”right top” rt_bg_attachment=”scroll”][vc_column_text]<\/p>\n
Suspended Timber Ground Floors<\/span><\/h6>\n
[\/vc_column_text][vc_column_text]3.1.8(b): A suspended timber floor next to the ground should be built as follows:[\/vc_column_text][vc_column_text]<\/p>\n
- \n
- There should be a ventilated air space measuring at least 75 mm from the concrete to the underside of any wall plates and at least 150 mm to the underside of the suspended timber floor (or insulation if provided).<\/li>\n<\/ul>\n
[\/vc_column_text][vc_column_text]<\/p>\n
- \n
- Each external wall should have ventilation openings placed so that the ventilating air will have a free path between opposite sides and to all parts. The openings should be large enough to give an actual opening of at least equivalent to 1500 mm\u00b2 for each metre run of wall.<\/li>\n<\/ul>\n
[\/vc_column_text][vc_column_text]<\/p>\n
- \n
- Any pipes needed to carry ventilating air should have a diameter of at least 100mm.<\/li>\n<\/ul>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row rt_row_background_width=”default” rt_row_style=”default-style” rt_row_borders=”” rt_row_paddings=”true” rt_bg_effect=”classic” rt_bg_image_repeat=”repeat” rt_bg_size=”cover” rt_bg_position=”right top” rt_bg_attachment=”scroll” rt_bg_video_format=”self-hosted” rt_padding_top=”10″ rt_padding_bottom=”0″][vc_column rt_wrp_col_paddings=”false” rt_border_top=”” rt_border_bottom=”” rt_border_left=”” rt_border_right=”” rt_border_top_mobile=”” rt_border_bottom_mobile=”” rt_border_left_mobile=”” rt_border_right_mobile=”” rt_bg_image_repeat=”repeat” rt_bg_size=”auto auto” rt_bg_position=”right top” rt_bg_attachment=”scroll”][vc_column_text]<\/p>\n
Suspended Concrete Ground Floors<\/span><\/h6>\n
[\/vc_column_text][vc_column_text]3.1.9: Suspended concrete ground floor with ventilated voids – This type of floor should be built:[\/vc_column_text][vc_column_text]<\/p>\n
- \n
- (b) with a ventilated air space measuring at least 150 mm clear from the ground to the underside of the floor, and<\/li>\n<\/ul>\n
[\/vc_column_text][vc_column_text]<\/p>\n
- \n
- (c) with ventilation openings in each external wall placed so that the ventilating air will have a free path between opposite sides and to all parts. The opening should be large enough to give an actual opening of at least equivalent to 1500 mm\u00b2 for each metre run of wall.<\/li>\n<\/ul>\n
[\/vc_column_text][vc_column_text]<\/p>\n
- \n
- Note: Sub-paragraphs (b) and (c) apply where there is a risk of explosive gas mixtures accumulating in voids under the floor. The height of the ventilated air space may be reduced where proprietary void formers are used.<\/li>\n<\/ul>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row rt_row_background_width=”default” rt_row_style=”default-style” rt_row_borders=”” rt_row_paddings=”true” rt_bg_effect=”classic” rt_bg_image_repeat=”repeat” rt_bg_size=”cover” rt_bg_position=”right top” rt_bg_attachment=”scroll” rt_bg_video_format=”self-hosted” rt_padding_top=”10″][vc_column rt_wrp_col_paddings=”false” rt_border_top=”” rt_border_bottom=”” rt_border_left=”” rt_border_right=”” rt_border_top_mobile=”” rt_border_bottom_mobile=”” rt_border_left_mobile=”” rt_border_right_mobile=”” rt_bg_image_repeat=”repeat” rt_bg_size=”auto auto” rt_bg_position=”right top” rt_bg_attachment=”scroll”][vc_separator style=”style-4″][vc_column_text]General:[\/vc_column_text][vc_column_text css=”.vc_custom_1665401492660{padding-right: 20px !important;}”]<\/p>\n
- \n
- Position ventilation clear of hard landscaping and vegetation.<\/li>\n<\/ul>\n
[\/vc_column_text][vc_column_text css=”.vc_custom_1726049671922{padding-right: 20px !important;}”]<\/p>\n
- \n
- Where flooding is a risk, consider using Rytons\u00a0Periscope\u00ae <\/sup>Vertical Extension to raise the height of the Periscope\u00ae<\/sup> above ground level to prevent low-level flood water from entering the property via the sub-floor air bricks.<\/li>\n<\/ul>\n
[\/vc_column_text][vc_column_text css=”.vc_custom_1712745534533{padding-right: 20px !important;}”]<\/p>\n
- \n
- Specify Rytons underfloor ventilators by name. Alternative products may have lower rates of ventilation which could leave the sub-floor under ventilated. Find NBS specifications here<\/a>.<\/li>\n<\/ul>\n
[\/vc_column_text][vc_column_text css=”.vc_custom_1712741641245{padding-right: 20px !important;}”]<\/p>\n
- \n
- Rytons Periscope\u00ae<\/sup> Underfloor Ventilator with Multifix\u00ae<\/sup> Air Brick is a plastic unit and therefore is not suitable for use within the external walls of high-rise buildings requiring non-combustible materials. For a compliant alternative, see Rytons A1\u00ae Fire-rated Periscope\u00ae Underfloor Ventilator<\/a>.<\/li>\n<\/ul>\n
[\/vc_column_text][vc_separator style=”style-4″][\/vc_column][\/vc_row][vc_row rt_row_background_width=”default” rt_row_style=”default-style” rt_row_borders=”” rt_row_paddings=”true” rt_bg_effect=”classic” rt_bg_image_repeat=”repeat” rt_bg_size=”cover” rt_bg_position=”right top” rt_bg_attachment=”scroll” rt_bg_video_format=”self-hosted”][vc_column rt_wrp_col_paddings=”false” rt_border_top=”” rt_border_bottom=”” rt_border_left=”” rt_border_right=”” rt_border_top_mobile=”” rt_border_bottom_mobile=”” rt_border_left_mobile=”” rt_border_right_mobile=”” rt_bg_image_repeat=”repeat” rt_bg_size=”auto auto” rt_bg_position=”right top” rt_bg_attachment=”scroll”][vc_column_text css=”.vc_custom_1665399262366{padding-right: 20px !important;}”]<\/p>\n
Rytons Underfloor Ventilation Range<\/h6>\n
[\/vc_column_text][vc_column_text]<\/p>\n
\n\n\n\n\nAchieve compliant sub-floor ventilation with Rytons Periscope\u00ae<\/sup> Underfloor Ventilators and range of accessories. We are always happy to assist you with ventilation calculations and product selection – call our technical sales office on 00441536 511874 for advice.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row rt_row_background_width=”default” rt_row_style=”default-style” rt_row_borders=”” rt_row_paddings=”true” rt_bg_effect=”classic” rt_bg_image_repeat=”repeat” rt_bg_size=”cover” rt_bg_position=”right top” rt_bg_attachment=”scroll” rt_bg_video_format=”self-hosted”][vc_column width=”1\/5″ rt_wrp_col_paddings=”false” rt_border_top=”” rt_border_bottom=”” rt_border_left=”” rt_border_right=”” rt_border_top_mobile=”” rt_border_bottom_mobile=”” rt_border_left_mobile=”” rt_border_right_mobile=”” rt_bg_image_repeat=”repeat” rt_bg_size=”auto auto” rt_bg_position=”right top” rt_bg_attachment=”scroll”][vc_column_text]<\/p>\n
\n\nRytons Periscope\u00ae <\/sup><\/strong>Underfloor Ventilator<\/h6>\n<\/div>\n<\/div>\n
[\/vc_column_text][vc_column_text]<\/p>\n
\n\nView product >><\/a><\/p>\n<\/div>\n<\/div>\n
[\/vc_column_text][vc_single_image image=”31749″ img_size=”large” style=”vc_box_outline” onclick=”custom_link” img_link_target=”_blank” link=”https:\/\/rts.vents.co.uk\/blog\/product-details\/rytons-periscope-underfloor-ventilator-pufv\/”][\/vc_column][vc_column width=”1\/5″ rt_wrp_col_paddings=”false” rt_border_top=”” rt_border_bottom=”” rt_border_left=”” rt_border_right=”” rt_border_top_mobile=”” rt_border_bottom_mobile=”” rt_border_left_mobile=”” rt_border_right_mobile=”” rt_bg_image_repeat=”repeat” rt_bg_size=”auto auto” rt_bg_position=”right top” rt_bg_attachment=”scroll”][vc_column_text]<\/p>\n
\n\nRytons Multifix\u00ae
\n<\/sup><\/strong>Air Brick<\/h6>\n<\/div>\n<\/div>\n[\/vc_column_text][vc_column_text]<\/p>\n
\n\n
- Rytons Periscope\u00ae<\/sup> Underfloor Ventilator with Multifix\u00ae<\/sup> Air Brick is a plastic unit and therefore is not suitable for use within the external walls of high-rise buildings requiring non-combustible materials. For a compliant alternative, see Rytons A1\u00ae Fire-rated Periscope\u00ae Underfloor Ventilator<\/a>.<\/li>\n<\/ul>\n
- Specify Rytons underfloor ventilators by name. Alternative products may have lower rates of ventilation which could leave the sub-floor under ventilated. Find NBS specifications here<\/a>.<\/li>\n<\/ul>\n
- Where flooding is a risk, consider using Rytons\u00a0Periscope\u00ae <\/sup>Vertical Extension to raise the height of the Periscope\u00ae<\/sup> above ground level to prevent low-level flood water from entering the property via the sub-floor air bricks.<\/li>\n<\/ul>\n
- Position ventilation clear of hard landscaping and vegetation.<\/li>\n<\/ul>\n
- Note: Sub-paragraphs (b) and (c) apply where there is a risk of explosive gas mixtures accumulating in voids under the floor. The height of the ventilated air space may be reduced where proprietary void formers are used.<\/li>\n<\/ul>\n
- (c) with ventilation openings in each external wall placed so that the ventilating air will have a free path between opposite sides and to all parts. The opening should be large enough to give an actual opening of at least equivalent to 1500 mm\u00b2 for each metre run of wall.<\/li>\n<\/ul>\n
- (b) with a ventilated air space measuring at least 150 mm clear from the ground to the underside of the floor, and<\/li>\n<\/ul>\n
- Any pipes needed to carry ventilating air should have a diameter of at least 100mm.<\/li>\n<\/ul>\n
- Each external wall should have ventilation openings placed so that the ventilating air will have a free path between opposite sides and to all parts. The openings should be large enough to give an actual opening of at least equivalent to 1500 mm\u00b2 for each metre run of wall.<\/li>\n<\/ul>\n
- There should be a ventilated air space measuring at least 75 mm from the concrete to the underside of any wall plates and at least 150 mm to the underside of the suspended timber floor (or insulation if provided).<\/li>\n<\/ul>\n
- For detailed guidance, refer to the full technical document available to download here<\/a><\/strong>.<\/li>\n<\/ul>\n